What is Dimethylformamide?

Dimethylformamide (CAS 68-12-2) is a chemical compound with the molecular formula C3H7NO and a molar mass of 73.09 g/mol. Chemical data from PubChem (National Institutes of Health, USA).

What is the CAS number of Dimethylformamide?

The CAS number (Chemical Abstracts Service) for Dimethylformamide is 68-12-2.

What is the chemical formula of Dimethylformamide?

The molecular formula of Dimethylformamide is C3H7NO. IUPAC name: N,N-dimethylformamide.

Where to buy Dimethylformamide (CAS 68-12-2)?

Dimethylformamide (CAS 68-12-2) is available at Eapearl Chemical: https://epchems.online/products/dimethylformamide/. Current price and availability information can be found on the product page.

Dimethylformamide

DMF

CAS 68-12-2 C3H7NO Other CLP Danger

EU REACH_XIVEU SVHCUK UK_SVHCMolGod Score: Primary

📄 Download SDS Card (PDF)

MolGod_SDSCARD_1

REACH 2020/878

v1 · 22.09.2026

Specification

Product Name	Dimethylformamide
Other Names	DMF
CAS No.	68-12-2
MF	C3H7NO
Molecular weight	73.09
Purity	99%
Appearance	Colorless and transparent liquid
Density	0.944 g/mL at 25 °C
Melting point	-61 °C
Boiling point	153 °C
Flashing point	136 °F

Values are typical for the standard grade. Tighter specifications are available — state the target in your inquiry and we confirm against the production batch.

Hazard classification

Danger

Harmonised classification (EU) — ECHA Annex VI (harmonised, ATP 23; 2026-07-07)

H360D May damage the unborn child
H332 Harmful if inhaled
H312 Harmful in contact with skin
H319 Causes serious eye irritation

European Chemicals Agency. "N,N-dimethylformamide; dimethyl formamide, Index No. 616-001-00-X." In Table 3 of Annex VI to Regulation (EC) No 1272/2008 (CLP Regulation), 23rd Adaptation to Technical Progress (harmonised list as of 2026-07-07). Helsinki: European Chemicals Agency, 2026. https://echa.europa.eu/information-on-chemicals/annex-vi-to-clp.

Packaging and shipping

Drum19 kg

IBC Drum1000 kg

ISO tank (20ft)24–26 m³

ISO tank (40ft)48–50 m³

Dimethylformamide (DMF, CAS 68-12-2) is a high-purity polar aprotic solvent with excellent chemical stability, high boiling point, and strong solvency. It is a colorless transparent liquid at room temperature with a slight amine-like odor.With molecular formula C₃H₇NO and molecular weight 73.09, it exhibits excellent compatibility with water and most organic solvents. Our DMF is mainly supplied as industrial or electronic grade with strict quality control, low moisture and impurity content, and stable performance.
It is widely used in chemical synthesis, synthetic leather production, pharmaceuticals, and electronic materials. As an important solvent in various industries, it ensures efficient processing and stable performance in different applications.

Dimethylformamide (DMF) Multi-functional Solution | Covers chemical synthesis, synthetic leather and pharmaceutical intermediates | Stable supply & reliable quality

Product Description

Dimethylformamide (DMF, CAS 68-12-2) is an important high-purity organic solvent widely used in chemical, pharmaceutical, and synthetic material industries.

It has excellent solvency, good chemical stability, and a high boiling point, making it a highly effective solvent for a wide range of organic and inorganic substances.

It appears as a colorless transparent liquid at room temperature with a slight amine-like odor. Our DMF is produced as industrial or electronic grade with purity over 99%, strict control of moisture, acidity, and other impurities, ensuring stable and consistent quality for industrial use.

DMF is mainly used in chemical synthesis, usually as a reaction solvent or medium to improve reaction efficiency and product yield. It is also widely applied in synthetic leather (PU/PVC), pharmaceuticals, and electronic materials processing.

In addition, DMF is used in polymer manufacturing, agrochemicals, and coatings due to its strong dissolving ability and compatibility with various substances. In usage, DMF should be handled under dry and sealed conditions to prevent moisture absorption and contamination.

It is widely applied in synthetic materials, pharmaceuticals, and fine chemicals industries. With high efficiency and stable performance, DMF has become an indispensable basic material in modern chemical industries.

Dimethylformamide (DMF) Multi-functional Solution | Covers chemical synthesis, synthetic leather and pharmaceutical intermediates | Stable supply & reliable quality orage systems. With high safety and stable performance, EC has become an indispensable basic material in modern energy and chemical industries.

Dimethylformamide (DMF) Multi-functional Solution | Covers chemical synthesis, synthetic leather and pharmaceutical intermediates | Stable supply & reliable quality

Delivery&Payment method

Dimethylformamide (DMF) Multi-functional Solution | Covers chemical synthesis, synthetic leather and pharmaceutical intermediates | Stable supply & reliable quality

Frequently asked

In what packaging is Dimethylformamide shipped?

Standard formats are Drum (19 kg), IBC Drum (1000 kg), ISO tank (20ft) (24–26 m³), ISO tank (40ft) (48–50 m³). Other packaging can be arranged for full-container orders.

Is a safety data sheet available for Dimethylformamide?

Yes, on request. Safety data sheets are issued per grade and destination market; state the country of import in your inquiry.

What purity do you supply?

The standard grade is 99%. Tighter specifications are confirmed against the production batch before shipment.

Technical reading on Dimethylformamide

DMF, DMSO and NMP compared for organic synthesis

Three dipolar aprotic solvents that look interchangeable on paper and fail in entirely different ways in a real…

Article

N-Methylformamide: polar solvent, not a green one

NMF carries a harmonised reproductive toxicity classification. What it is genuinely good at, and why it is no…

Article

Ester solvents: how to pick the right one

Acetates, carbonates, plasticisers and reactive monomers all sell as esters. A selection guide by job, not by family…

Article

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🧬 3D Molecule Visualizer

Data transcribed from regulatory registers and technical literature, with the source and edition stated. It does not replace the supplier's safety data sheet. Fields without a recorded source are marked as such.

📊 Physicochemical data — CAS 68-12-2MolGod_PROPHUB_MAIN

📊 Physicochemical properties

Quick Reference

Formula: C₃H₇NO

MW: 73.09 g/mol

CAS: 68-12-2

Detailed Properties

A supplement to the „Physicochemical properties (database)” table below — repeated values are shown only once.

Property	Value	Unit	Conditions	Source
Refractive Index (n_D)	1.4305		20 °C, D-line	Reid, Prausnitz, Poling 4th ed. (1987)

🔬 Advanced Properties

Chemical Identifiers

SMILES: CN(C)C=O

Data sources: Reid, Prausnitz, Poling 4th ed. (1987) (ISBN 9780070517998)

Last updated: 2026-09-21

📐 Physical & Chemical Properties (DB) 22 fields MolGod Score: Primary

Property	Value	Unit	Conditions	Source
Melting point	-60.4 ^[1]^[2]	°C	1 atm	Reid, Prausnitz, Poling 4th ed. (1987)
Boiling point	153 ^[1]^[2]	°C	760 mmHg	Reid, Prausnitz, Poling 4th ed. (1987)
Water solubility	miscible	—	qualitative description (no numerical value)	Reid, Prausnitz, Poling 4th ed. (1987)
Density (ρ)	0.9445 ^[2]	g/cm³	20°C	Reid, Prausnitz, Poling 4th ed. (1987)
Refractive index (n_D)	1.4305	—	20°C, sodium D	Reid, Prausnitz, Poling 4th ed. (1987)
Viscosity (η)	0.794	cP	25°C	Reid, Prausnitz, Poling 4th ed. (1987)
Vapor pressure	3.7	mmHg	25°C	Reid, Prausnitz, Poling 4th ed. (1987)
Flash point	58 ^[2]	°C	closed cup	No primary source
Autoignition temperature	445 ^[2]	°C	in air	No primary source
logP (octanol/water)	-1.01	—		No primary source
logD (pH 7)	-1.01	—	pH 7	Reid, Prausnitz, Poling 4th ed. (1987)
Dielectric constant (ε)	36.7	—		Reid, Prausnitz, Poling 4th ed. (1987)
Surface tension	36.76	mN/m		Reid, Prausnitz, Poling 4th ed. (1987)
Specific heat (cp)	2	J/(g·K)		Reid, Prausnitz, Poling 4th ed. (1987)
Thermal conductivity (k)	0.184	W/(m·K)		Reid, Prausnitz, Poling 4th ed. (1987)
Dipole moment (μ)	3.82	D		Reid, Prausnitz, Poling 4th ed. (1987)
ΔH vaporization	47.5	kJ/mol		Reid, Prausnitz, Poling 4th ed. (1987)
ΔH fusion	7.9	kJ/mol	at mp	Reid, Prausnitz, Poling 4th ed. (1987)
Critical temperature (Tc)	376.9	°C	critical point	Reid, Prausnitz, Poling 4th ed. (1987)
Critical pressure (Pc)	44	bar	critical point	Reid, Prausnitz, Poling 4th ed. (1987)
Acentric factor (ω)	0.376	—	Pitzer	Reid, Prausnitz, Poling 4th ed. (1987)
Ethanol solubility	miscible	—	qualitative description (no numerical value)	Reid, Prausnitz, Poling 4th ed. (1987)

📚 Scientific references (Chicago Author-Date) (2 sources)

NIST. Chemistry WebBook, SRD 69. National Institute of Standards and Technology. ↗ dotyczy: Melting point · Boiling point
PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. ↗ dotyczy: Melting point · Boiling point · Density (ρ) · Flash point · Autoignition temperature

Physicochemical values are derived from the independent, peer-reviewed sources listed above.

Chemical Overview: DimethylformamideMolGod_OVERVIEW_1

Molecular formula	C₃H₇NO^[1]
Molecular weight	73.09 g/mol^[1]
Melting point	-60.4 °C^[1]^[2]
Boiling point	153 °C (760 mmHg)^[1]^[2]
Density	0.9445 g/cm³^[1]
LogP (lipophilicity)	-1.01^[1]
IUPAC name	N,N-dimethylformamide^[1]
SMILES	`CN(C)C=O`^[1]
InChIKey	`ZMXDDKWLCZADIW-UHFFFAOYSA-N`^[1]

Synonyms: N,N-DIMETHYLFORMAMIDE · Dimethylformamide · 68-12-2 · Dimethyl formamide · N-Formyldimethylamine

Data sources: PubChem (NLM/NIH), Reid, Prausnitz, Poling 4th ed. (1987)
Last updated: 2026-09-21

📚 Scientific references (Chicago Author-Date) (2 sources)

PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. ↗ dotyczy: Molecular formula · Molecular weight · Melting point · Boiling point · Density · LogP (lipophilicity) · IUPAC name · SMILES · InChIKey
NIST. Chemistry WebBook, SRD 69. National Institute of Standards and Technology. ↗ dotyczy: Melting point · Boiling point

SCIENTIFIC RESEARCH

[1]Europe PMC2026

Redox-mediated domino electrosynthesis of N,N-dimethylformamide with industrial-relevant productivity and modularized cathodic integration.

et al.. (2026). "Redox-mediated domino electrosynthesis of N,N-dimethylformamide with industrial-relevant productivity and modularized cathodic integration.". https://doi.org/10.1038/s41467-026-71637-

[2]Europe PMC2026

Microbial Responses and Metabolic Mechanisms During Anaerobic Degradation of N,N-Dimethylformamide by Co-Cultured Sludge.

et al.. (2026). "Microbial Responses and Metabolic Mechanisms During Anaerobic Degradation of N,N-Dimethylformamide by Co-Cultured Sludge.". https://doi.org/10.3390/microorganisms14061172

[3]Europe PMC2026

Bioaugmentation stabilizes high-loading anaerobic N,N-dimethylformamide removal: process stability and microbial ecological responses.

et al.. (2026). "Bioaugmentation stabilizes high-loading anaerobic N,N-dimethylformamide removal: process stability and microbial ecological responses.". https://doi.org/10.1016/j.biortech.2026.135890

[4]Europe PMC2026

Nitrogen metabolism and microbial responses in anammox under dual stress of N,N-dimethylformamide.

et al.. (2026). "Nitrogen metabolism and microbial responses in anammox under dual stress of N,N-dimethylformamide.". https://doi.org/10.1016/j.jhazmat.2026.143019

[5]Europe PMC2026

Recent Progress of N,N-Dimethylformamide (DMF) as Versatile Synthons in Organic Synthesis.

et al.. (2026). "Recent Progress of N,N-Dimethylformamide (DMF) as Versatile Synthons in Organic Synthesis.". https://doi.org/10.1007/s41061-026-00543-1

[6]Europe PMC2026

Asymmetric Dual Sites Enable Spatially Resolved Biradical-Mediated C-N Coupling for N,N-Dimethylformamide Photoelectrosynthesis.

et al.. (2026). "Asymmetric Dual Sites Enable Spatially Resolved Biradical-Mediated C-N Coupling for N,N-Dimethylformamide Photoelectrosynthesis.". https://doi.org/10.1002/anie.9125401

[7]Europe PMC2026

Dynamic reconstruction of hydrogen-bond networks in N,N-dimethylformamide-water system revealed by 2D correlation Raman spectroscopy.

et al.. (2026). "Dynamic reconstruction of hydrogen-bond networks in N,N-dimethylformamide-water system revealed by 2D correlation Raman spectroscopy.". https://doi.org/10.1063/5.0325724

[8]Europe PMC2026

Pseudochrobactrum albidum sp. nov., a N,N-dimethylformamide-Degrading Bacterium Isolated from Activated Sludge of a Wastewater Treatment Plant.

et al.. (2026). "Pseudochrobactrum albidum sp. nov., a N,N-dimethylformamide-Degrading Bacterium Isolated from Activated Sludge of a Wastewater Treatment Plant.". https://doi.org/10.1007/s00284-026-04

📚 Scientific references (Chicago Author-Date) 18 refs · 4 baz

MOLECULE Per-CAS bibliography (live from 13+ databases)

Sources: db:Europe PMC (12) · db:arxiv (5) · db:pubmed (1) · db:crossref (1)

db:Europe PMC et al.. (2026). "Redox-mediated domino electrosynthesis of N,N-dimethylformamide with industrial-relevant productivity and modularized cathodic integration.". https://doi.org/10.1038/s41467-026-71637-z →
db:Europe PMC et al.. (2026). "Microbial Responses and Metabolic Mechanisms During Anaerobic Degradation of N,N-Dimethylformamide by Co-Cultured Sludge.". https://doi.org/10.3390/microorganisms14061172 →
db:Europe PMC et al.. (2026). "Bioaugmentation stabilizes high-loading anaerobic N,N-dimethylformamide removal: process stability and microbial ecological responses.". https://doi.org/10.1016/j.biortech.2026.135890 →
db:Europe PMC et al.. (2026). "Nitrogen metabolism and microbial responses in anammox under dual stress of N,N-dimethylformamide.". https://doi.org/10.1016/j.jhazmat.2026.143019 →
db:Europe PMC et al.. (2026). "Recent Progress of N,N-Dimethylformamide (DMF) as Versatile Synthons in Organic Synthesis.". https://doi.org/10.1007/s41061-026-00543-1 →
db:Europe PMC et al.. (2026). "Asymmetric Dual Sites Enable Spatially Resolved Biradical-Mediated C-N Coupling for N,N-Dimethylformamide Photoelectrosynthesis.". https://doi.org/10.1002/anie.9125401 →
db:Europe PMC et al.. (2026). "Dynamic reconstruction of hydrogen-bond networks in N,N-dimethylformamide-water system revealed by 2D correlation Raman spectroscopy.". https://doi.org/10.1063/5.0325724 →
db:Europe PMC et al.. (2026). "Regulating the Adsorption Configuration of Intermediates to Construct C─N Bonds From CO2 for High-Efficiency N,N-Dimethylformamide Electrosynthesis.". https://doi.org/10.1002/anie.4379815 →
db:Europe PMC (2025). "Solvation Structure and Dynamics of the Thiocyanate Anion in mixed N,N-Dimethylformamide-Water Solvents: A Molecular Dynamics Approach.". https://doi.org/10.1002/cphc.202400732 →
db:Europe PMC et al.. (2025). "Life Cycle Assessment of Solvothermal Zeolitic Imidazolate Framework-8 Synthesis: Is the Substitution of N,N-Dimethylformamide with Glycerol Carbonate Environmentally Sustainable?". https://doi.org/10.1002/cssc.202502019 →
db:Europe PMC et al.. (2024). "The potential health risks of N,N-dimethylformamide: An updated review.". https://doi.org/10.1002/jat.4590 →
db:arxiv Fernando Hevia, Karine Ballerat-Busserolles, Yohann Coulier et al.. (2024). "Thermodynamics of amide+amine mixtures. 5. Excess molar enthalpies of N,N-dimethylformamide or N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine systems. ERAS results". arXiv (2409.17925v1). https://doi.org/10.1016/j.fluid.2019.112283 →
db:arxiv Fernando Hevia, Juan Antonio González, Ana Cobos et al.. (2024). "Thermodynamics of amide+amine mixtures. 4. Relative permittivities of N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine and of N,N-dimethylformamide+aniline mixtures". arXiv (2409.16156v1). https://doi.org/10.1016/j.jct.2017.11.011 →
db:arxiv Fernando Hevia, Juan Antonio González, Isaías García de la Fuente et al.. (2024). "Thermodynamics of amide + amine mixtures. 3. Relative permittivities of N,N-dimethylformamide + N-propylpropan-1-amine, + N-butylbutan-1-amine, + butan-1-amine, or + hexan-1-amine systems at several temperatures". arXiv (2409.15208v1). https://doi.org/10.1016/j.molliq.2017.05.025 →
db:arxiv Fernando Hevia, Ana Cobos, Juan Antonio González et al.. (2024). "Thermodynamics of Amide + Amine Mixtures. 1. Volumetric, Speed of Sound, and Refractive Index Data for N,N-Dimethylformamide +N-Propylpropan-1-amine, +N-Butylbutan-1-amine, +Butan-1-amine, or +Hexan-1-amine Systems at Several Temperatures". arXiv (2409.07472v1). https://doi.org/10.1021/acs.jced.5b00802 →
db:arxiv Ana Cobos, Fernando Hevia, Juan Antonio González et al.. (2024). "Thermodynamics of amide + ketone mixtures. 1. Volumetric, speed of sound and refractive index data for N,N-dimethylformamide + 2-alkanone systems at several temperatures". arXiv (2408.15644v1). https://doi.org/10.1016/j.jct.2016.02.016 →
db:pubmed Wei ZH, Salami OO, Koya J et al.. (2022). "N,N-Dimethylformamide Delays LPS-Induced Preterm Birth in a Murine Model by Suppressing the Inflammatory Response.". Reproductive sciences (Thousand Oaks, Calif.). https://doi.org/10.1007/s43032-022-00924-z →
db:crossref R. Muñoz, J.B. Montón, M.C. Burguet et al.. (2005). "Phase equilibria in the systems isobutyl alcohol+N,N-dimethylformamide, isobutyl acetate+N,N-dimethylformamide and isobutyl alcohol+isobutyl acetate+N,N-dimethylformamide at 101.3kPa". Fluid Phase Equilibria. https://doi.org/10.1016/j.fluid.2005.03.014 →

Regulatory status of the substance

Inventories: EU/REACH_XIV, EU/SVHC, UK/UK_SVHC. Regulatory information — does not restrict purchase in this store.

🧮 Stoichiometry CalculatorMolGod_STOICH_1

🧪 Chemical DataMolGod_CHEMDATA_1

CAS Number: 68-12-2
Molecular formula: C3H7NO
Molar mass: 73.09 g/mol
IUPAC name (EN): N,N-dimethylformamide
SMILES: CN(C)C=O
InChIKey: ZMXDDKWLCZADIW-UHFFFAOYSA-N

📚 Scientific literature (19 articles)MolGod_LITSCI_1

🔒

The potential health risks of N,N-dimethylformamide: An updated review. 18 citations

et al. · (2024)

DOI ↗PubMed ↗

🔓

Redox-mediated domino electrosynthesis of N,N-dimethylformamide with industrial-relevant productivity and modularized cathodic integration. 1 citations

et al. · (2026)

DOI ↗PubMed ↗PDF ↗

🔓

Microbial Responses and Metabolic Mechanisms During Anaerobic Degradation of N,N-Dimethylformamide by Co-Cultured Sludge.

et al. · (2026)

DOI ↗PubMed ↗PDF ↗

🔓

Thermodynamics of amide+amine mixtures. 5. Excess molar enthalpies of N,N-dimethylformamide or N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine systems. ERAS results

Fernando Hevia, Karine Ballerat-Busserolles, Yohann Coulier et al. · (2024) · arXiv (2409.17925v1)

DOI ↗PDF ↗

🔓

Thermodynamics of amide+amine mixtures. 4. Relative permittivities of N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine and of N,N-dimethylformamide+aniline mixtures

Fernando Hevia, Juan Antonio González, Ana Cobos et al. · (2024) · arXiv (2409.16156v1)

DOI ↗PDF ↗

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📡 Data sourcesMolGod_SOURCES_1

The data in this widget comes from the following verified scientific sources:

PubChem — National Center for Biotechnology Information (NCBI/NIH), USA
ChEMBL — European Bioinformatics Institute (EMBL-EBI), UK
NIST WebBook — National Institute of Standards and Technology, USA

Data is cached locally for speed — the widget also works offline.

⚗️ Physicochemical propertiesMolGod_PHYSTAB_2

Temp. wrzenia: 152.9
Temp. topnienia: -60.5
Density: 0.95

Source: PubChem, NIST WebBook. Last updated: 2026-09-21

🔍 External identifiersMolGod_EXTID_1

15 of 16 ID systems94%

Database	Identifier	Actions
CAS Registry Number	68-12-2	Open →
PubChem CID	6228^[1]	Open →
InChIKey	ZMXDDKWLCZADIW-UHFFFAOYSA-N^[1]	Open →
InChI	InChI=1S/C3H7NO/c1-4(2)3-5/h3H,1-2H3^[1]
SMILES	CN(C)C=O^[1]
EC Number	200-679-5^[2]	Open →
ChEMBL	CHEMBL268291^[3]	Open →
DrugBank	DB01844	Open →
KEGG Compound	C03134	Open →
HMDB	HMDB0001888	Open →
ChemSpider	5993^[4]	Open →
MeSH UID (NLM)	D004126	Open →
UNII (FDA)	8696NH0Y2X	Open →
NSC Number (NCI)	5356	Open →
WikiData QID	Q409298	Open →

Sources: PubChem (NIH), Wikidata SPARQL, KEGG, ChEMBL (EBI), CompTox CTX (EPA).

📚 Scientific references (Chicago Author-Date) (4 sources)

PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. ↗ dotyczy: PubChem CID · InChIKey · InChI · SMILES
ECHA. EC Inventory — EINECS, ELINCS, NLP and List Numbers assigned under REACH. Helsinki: European Chemicals Agency. ↗ dotyczy: EC Number
ChEMBL. European Bioinformatics Institute (EMBL-EBI), bioactivity database. ↗ dotyczy: ChEMBL
ChemSpider. Royal Society of Chemistry, chemical structure database. ↗ dotyczy: ChemSpider

📡 Spectroscopy — CAS 68-12-2MolGod_SPECHUB_MAIN

📊 Spectroscopic spectra databases — inline data 9 sources MolGod_SPECDB_2

Spectra are fetched on demand from 9 sources. Each spectrum is stored in our database — the next time it is opened there are zero requests to the external API. Download JCAMP-DX / CSV / PNG for every spectrum without searching.

IR IR (Infrared) — NIST WebBook

Public domain (US Federal)

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📚 NIST Chemistry WebBook, SRD 69

MS (NIST) Mass Spectrum (EI) — NIST WebBook

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— points

📚 NIST Standard Reference Database 1A

UV-Vis UV/Visible Absorption — NIST WebBook

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📚 NIST Chemistry WebBook, SRD 69

¹H NMR NMR (¹H, ¹³C) — NMRShiftDB

CC-BY-SA 4.0

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📚 Steinbeck C et al. (2003) J. Chem. Inf. Comput. Sci. 43(1):10–16 DOI: 10.1021/ci025588g

MS (MoNA) MoNA — MassBank of North America

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📚 MassBank of North America (UC Davis) DOI: 10.1002/jms.1777

IR/NMR/MS (SDBS) SDBS — Spectral Database for Organic Compounds (Japan AIST)

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Reference source — no public API. Open in an external database:

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📚 SDBSWeb: https://sdbs.db.aist.go.jp (AIST, Japan)

JP Monograph Japanese Pharmacopoeia — Monographs

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📚 Japanese Pharmacopoeia 18th Edition (2021)

WHO INN WHO — International Nonproprietary Names

WHO Model Lists (free)

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📚 WHO INN Programme

DOAJ DOAJ — Directory of Open Access Journals

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📚 DOAJ — doaj.org

🔬 Interactive spectra (live — NIST / MoNA / NMRShiftDB / SDBS) (2)

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MS — Mass spectrometry (EI 70eV)

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δ (ppm)	Multiplicity	Integration	J (Hz)	Assignment
8.02	s	1	—	CHO
3.01	s	3	—	N-CH3 (trans)
2.96	s	3	—	N-CH3 (cis)

δ (ppm)	Multiplicity	Integration	J (Hz)	Assignment
162.60	s	—	—	CHO (C=O)
36.20	s	—	—	N-CH3 (trans)
31.50	s	—	—	N-CH3 (cis)

Structural propertiesMolGod_STRUCT3D_1

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❓ Frequently asked questions (3)MolGod_FAQ_1

What is 68-12-2?

68-12-2 (CAS 68-12-2) is a chemical compound. The chemical data comes from PubChem (National Institutes of Health, USA).

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What is the CAS number of 68-12-2?

The CAS number for 68-12-2 is 68-12-2. A CAS Registry Number is the standard identifier for a chemical substance in scientific literature and in trade.

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68-12-2 should be stored as its safety data sheet directs \— typically in a dry, cool, well-ventilated place, away from heat and from materials it is incompatible with.

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📄 .SDF 📄 .MOL 📈 3D JSON 🌐 More formats (PubChem)

Source: PubChem, National Library of Medicine (NIH). CID: 6228

🔄 Concentration unit converter LIVE MolGod_UNITCONV_1

Enter the Dimethylformamide concentration in any unit — the rest will be calculated automatically.

MW: 73.09 g/mol · IUPAC Gold Book ↗

⚗️ Conversion formulas + citations (per formula)

Conversion	Formula	Accuracy	Source
% (w/v) ↔ molarity	c (mol/L) = (% × 10) / MW	±0.5% rel. when density ≈ 1.0 g/mL	IUPAC (2019)
millimolar ↔ molar	c (mol/L) = mM × 10⁻³	Exact	Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
molarity (mol/L)	c = n/V = (m/MW)/V	±0.1% (depends on MW precision)	IUPAC (2019)
parts per million (mg/L) ↔ molarity	c (mol/L) = ppm / (1000 × MW); equivalently ppm = mg/L for dilute aqueous	±1% (density-independent for dilute solutions)	IUPAC (2019)
mg/mL ↔ molarity	c (mol/L) = (mg/mL × 1000) / MW / 1000 = mg/mL / MW × 1	±0.2%	Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
g/L ↔ molarity	c (mol/L) = (g/L) / MW	±0.1% (depends on MW precision)	Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
mmol/L ↔ molarity	c (mol/L) = mmol/L × 10⁻³	Exact	Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
Celsius ↔ Kelvin	T(K) = t(°C) + 273.15	±0.01 K (ITS-90 scale)	BIPM (Bureau International des Poids et Mesures) (2019)
Celsius ↔ Fahrenheit	T(°F) = T(°C) × 9/5 + 32	±0.1 °F	Thompson A, Taylor BN (2008)
density-corrected % ↔ molarity	c (mol/L) = (%w/w × ρ × 10) / MW, ρ in g/mL	±0.1% when ρ known to 3 decimals	Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)

📚 Bibliography (8 authoritative sources)

Thompson A, Taylor BN (2008). Guide for the Use of the International System of Units (SI). NIST Special Publication 811 · DOI: 10.6028/NIST.SP.811-2008
→ Primary SI standard for US scientific usage
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007). Quantities, Units and Symbols in Physical Chemistry — The IUPAC Green Book. RSC Publishing, 3rd ed. · DOI: 10.1039/9781847557889 · ISBN: 978-0-85404-433-7
→ Canonical IUPAC guide for chemistry quantities/units
BIPM (Bureau International des Poids et Mesures) (2019). The International System of Units (SI), 9th edition. BIPM · ↗
→ International SI definitions (incl. redefined kilogram 2019)
ISO/IEC (2022). Quantities and units — Part 1: General. International Organization for Standardization — ISO 80000-1:2022 · ↗
→ General rules for physical quantities and units
ISO/IEC (2019). Quantities and units — Part 9: Physical chemistry and molecular physics. International Organization for Standardization — ISO 80000-9:2019 · ↗
→ Concentration / molality / amount-of-substance conventions
Tiesinga E, Mohr PJ, Newell DB, Taylor BN (2021). CODATA recommended values of the fundamental physical constants: 2018. Rev. Mod. Phys. 93(2):025010 · DOI: 10.1103/RevModPhys.93.025010
→ Avogadro, gas constant, molar volume (2019 SI revision)
IUPAC (2019). Compendium of Chemical Terminology — the IUPAC Gold Book (online). IUPAC · DOI: 10.1351/goldbook
→ Definitions of mass fraction, molality, normality, ppm, activity
Mills IM, Cvitaš T, Homann K, Kallay N, Kuchitsu K (1988). Quantities, Units and Symbols in Physical Chemistry. Blackwell Scientific Publications, 1st ed. · ISBN: 0-632-01773-5
→ Historical predecessor of IUPAC Green Book

Similar molecular structuresMolGod_SIMSTR_1

Loading similar structures...

🧪 Solution Preparation Wizard WIZARD MolGod_PREP_1

① Select concentration

② Target volume

③ Solvent

Calculations per: IUPAC Gold Book ↗, Merck ↗

Computational chemistryMolGod_COMPCHEM_1

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🛡️ Safety — CAS 68-12-2MolGod_SAFEHUB_MAIN

Data limitations notice. The safety information on this page is for reference only and does not replace a full safety data sheet (SDS). Before using the product, consult the manufacturer's current safety data sheet and the GHS/CLP guidance. The CLP classification applies to the pure bulk substance, not to commercial formulations.

GHS/CLP classification — Regulation (EC) No 1272/2008 + UN GHS Rev. 9 (2021).

⚠️ Danger

GHS07 Irritant / harmful

GHS08 Health hazard

🚨 Hazard statements (H)

H360D — May damage the unborn child
H332 — Harmful if inhaled
H312 — Harmful in contact with skin
H319 — Causes serious eye irritation

🛡 Precautionary statements (P)

P203 — Obtain, read and follow all safety instructions before use
P264 — Wash thoroughly after handling

✓ Harmonised classification pursuant to Annex VI of the CLP Regulation (EC) 1272/2008 (official, binding classification). Index number: 616-001-00-X.

Reference (Chicago): European Chemicals Agency. "N,N-dimethylformamide; dimethyl formamide, Index No. 616-001-00-X." In Table 3 of Annex VI to Regulation (EC) No 1272/2008 (CLP Regulation), 23rd Adaptation to Technical Progress (harmonised list as of 2026-07-07). Helsinki: European Chemicals Agency, 2026. https://echa.europa.eu/information-on-chemicals/annex-vi-to-clp.

⚠ IARC — Group 2A: probably carcinogenic to humans. (Independent assessment of carcinogenicity evidence by IARC/WHO — supplements the CLP classification above.)

Reference (Chicago): IARC. n.d. IARC Monographs on the Identification of Carcinogenic Hazards to Humans: CAS 68-12-2. Lyon, France: International Agency for Research on Cancer, World Health Organization. https://monographs.iarc.who.int/list-of-classifications/.

Classification from the local MOL-GOD list (snapshot) — unverified against the current IARC list. Verify

Translations: CLP Regulation (EC) 1272/2008, Annexes III and IV. Data: PubChem/NLM.

📚 Consolidated scientific references — Chicago Author-Date 10 sources

References collected from all Safety Hub tabs. CAS: 68-12-2 · PubChem ↗

Parlament Europejski i Rada UE. 2008. "Rozporządzenie (WE) nr 1272/2008 w sprawie klasyfikacji, oznakowania i pakowania substancji (CLP)." Dz.Urz. UE L 353. [↗] GHS, Regulations
United Nations Economic Commission for Europe (UNECE). 2021. "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), Ninth Revised Edition." United Nations, Geneva. [↗] GHS
Goldfrank, Lewis R., Robert S. Hoffman, Mary Ann Howland, et al.. 2019. "Goldfrank's Toxicologic Emergencies, 11th ed.." McGraw-Hill Education, New York. ISBN 978-1-25-985961-8. Pierwsza pomoc, Toksykologia
National Institute for Occupational Safety and Health (NIOSH). 2023. "NIOSH Pocket Guide to Chemical Hazards (DHHS Publ. 2005-149)." U.S. Department of Health and Human Services / CDC, Cincinnati, OH. [↗] Pierwsza pomoc, PPE, Toksykologia
European Committee for Standardization (CEN). 2016. "EN 374-1:2016 — Protective gloves against dangerous chemicals and micro-organisms." CEN, Brussels. [↗] PPE
UNECE. 2023. "European Agreement Concerning the International Carriage of Dangerous Goods by Road (ADR 2025)." United Nations, Geneva. [↗] Utylizacja, Regulacje
National Fire Protection Association (NFPA). 2022. "NFPA 400 — Hazardous Materials Code." NFPA, Quincy, MA. [↗] Magazynowanie
Urben, P.G. (ed.). 2017. "Bretherick's Handbook of Reactive Chemical Hazards, 8th ed.." Butterworth-Heinemann / Elsevier, Oxford. [↗] Magazynowanie
Ministerstwo Klimatu i Środowiska RP. 2023. "Baza danych o produktach i opakowaniach oraz o gospodarce odpadami (BDO)." Ministerstwo Klimatu i Środowiska, Warszawa. [↗] Utylizacja
International Agency for Research on Cancer (IARC / WHO). 2024. "IARC Monographs on the Identification of Carcinogenic Hazards to Humans — List of Classifications." WHO, Lyon. [↗] Toksykologia

Tabs with their own references (Emergency, PPE, Storage, Waste) contain additional bibliographic entries within their respective sections.

📈 Analytical statistics (t-test · RSD · Grubbs · Q-Dixon) ICH Q2

Paste a series of replicate measurements (CSV, or one number per line). The calculator computes the mean, standard deviation and 95% CI, and detects outliers (Grubbs + Dixon Q).

Measurement results:

Separator: comma, space, tab, new line. Minimum 3 measurements.

📐 Statistical formulas

x̄ = Σxᵢ / n — arithmetic mean
s² = Σ(xᵢ - x̄)² / (n-1) — sample variance
s = √s² — standard deviation
RSD% = (s / x̄) × 100% — relative standard deviation
CI₉₅ = x̄ ± t(0.05, n-1) × s / √n — Student's t
G = |xᵢ - x̄| / s — Grubbs' test
Q = |xsuspect - xnearest| / |xmax - xmin| — Dixon Q-test

Source: ICH Q2(R2) Validation of Analytical Procedures · ICH PDF ↗

🧪 Buffer Recipe Calculator UNIQUE

Choose a buffer from the list of 20 popular systems → enter the target pH → get an exact recipe with the masses to weigh out.

Step 1: Choose a buffer system

📜 Recipe history (last 10)

Pharmacological Status

Prekliniczny

Phase I

Phase II

Phase III

Approved

Preclinical — no human study data.

ChEMBL CHEMBL268291 ↗

🚚 Transport classification (ADR / IATA / IMDG) UN 2265

UN Number

UN 2265

UN number per the indicated source. Verify the transport class and packing group in ADR Table A / UN Model Regulations before shipment.

Source: Karta SDS sek.14 (kanon zmaterializowany)

🛣️ ADR Road Transport

Class:
Packing Group:
Shipping name:

Sources: ADR 2025 ↗ · IATA DGR ↗ · IMDG Code ↗

📅 Project Planner — Lab Experiment Manager NEW

Plan your entire laboratory project: add experiments with reagents, replicates, and duration. You'll get a Gantt chart, a shopping list (with links to the store!), a budget with a 10% margin, and a GHS risk matrix.

🧪 Solubility and solvent compatibility MolGod_SOLUB_1

Molecule

Dimethylformamide

Formula

C3H7NO

logP (XLogP3)

-1.00

Mass (g/mol)

73.09

Polarity

Hydrophilic (polar)

⚠️ HSP estimate (literature / group contribution). Indicative data — does not replace experimental studies.

Ra < R₀ = good miscibility · Ra < 1,5×R₀ = borderline · above = poor (R₀ — radius of the Hansen sphere of this molecule) For this molecule R₀ = 8..

Solvent	Compat.	Ra	GC-MS	HPLC	Applications	References
Water (H₂O)	miscible	31.3	✗ Nie	A (aqueous) (RP)	buffercell cultureanalyticalextraction (hydrophilic)	Hansen (2007) ↗NIST ↗CRC ↗IAPWS ↗Reichardt 2011 ↗GESTIS ↗
Ethanol (EtOH)	~ Avg.	10.0	✗ Nie	A/B modifier (RP/NP)	extractionspectroscopy (UV-Vis)synthesisHPLC modifier	Hansen (2007) ↗NIST ↗CRC ↗Snyder & Kirkland ↗Smallwood ↗GESTIS ↗
Methanol (MeOH)	− Poor	12.0	✗ Nie	A/B (RP) (RP)	HPLC (eluent)LC-MSKarl FischerUV-transparent to 205 nm	Snyder & Kirkland ↗NIST ↗CRC ↗Snyder & Kirkland ↗GESTIS ↗
Acetone	+ Good	6.6	✗ Nie	B modifier (NP)	GC headspacecrystallisationdegreasingsynthesis	Reichardt (2011) ↗NIST ↗CRC ↗Hansen 2007 ↗Smallwood ↗GESTIS ↗
Acetonitrile (ACN)	+ Good	7.9	✗ Nie	B (RP) (RP)	HPLC eluent (gold standard)LC-MS (low UV cut-off, 190 nm)peptide analysis	Aguilar, M.I. ↗NIST ↗CRC ↗Snyder & Kirkland ↗Reichardt 2011 ↗GESTIS ↗
DMSO	+ Good	3.5	✗ Nie	N/A (N/A)	NMR (d6-DMSO)cell biology (cryopreservation)drug deliverysynthesis	Wypych, G. ↗NIST ↗Wypych 2019 ↗Hansen 2007 ↗Reichardt 2011 ↗GESTIS ↗
THF	~ Avg.	8.7	✗ Nie	B (NP) (NP)	GPC/SEC (polymer analysis)Grignard synthesisorganometallics	Armarego (2009) ↗NIST ↗Armarego 2009 ↗Hansen 2007 ↗Smallwood ↗GESTIS ↗
DCM (CH₂Cl₂)	~ Avg.	9.2	✓ Tak	B (NP) (NP)	extractionNP-HPLCGC-MScrystallisation (anti-solvent)	NIST WebBook ↗NIST ↗IARC 71 ↗Hansen 2007 ↗Reichardt 2011 ↗GESTIS ↗
Chloroform (CHCl₃)	− Poor	12.0	✓ Tak	N/A (toxic) (N/A)	NMR (CDCl3)lipid extraction (Folch method)NP-TLC	IARC Monographs ↗NIST ↗IARC 73 ↗Hansen 2007 ↗Reichardt 2011 ↗GESTIS ↗
Hexane	− Poor	18.4	✓ Tak	A (NP) (NP)	NP-HPLCoil extraction (lipids)GC-MSTLC (NP)	Dass, C. (2011) ↗NIST ↗ATSDR n-Hexane ↗Hansen 2007 ↗Snyder & Kirkland ↗GESTIS ↗
Toluene	− Poor	15.5	✓ Tak	B (NP) (NP)	NMR (d8-toluene)synthesisazeotropic drying (Dean-Stark)	GESTIS DGUV ↗NIST ↗IARC 71 ↗Hansen 2007 ↗Smallwood ↗GESTIS ↗

Sources: PubChem (NIH) · Hansen Solubility Database

📚 Scientific references for solvents (Chicago Author-Date) — click to expand

11 solvents · 54 full citations (NIST/CRC/IARC/Hansen/Reichardt/Smallwood/Wypych/Armarego/Snyder/GESTIS) — below.

Water (H₂O)

NIST — NIST Chemistry WebBook — Water (CAS 7732-18-5)
CRC — CRC Handbook of Chemistry and Physics, 104th ed., Sec. 8 (Properties of Water)
IAPWS — IAPWS Release on Static Dielectric Constant of Water
Reichardt 2011 — Solvents and Solvent Effects in Organic Chemistry
GESTIS — GESTIS Substance Database — Water

Ethanol (EtOH)

NIST — NIST Chemistry WebBook — Ethanol (CAS 64-17-5)
CRC — CRC Handbook — Ethanol physical constants
Snyder & Kirkland — Modern Liquid Chromatography — Ethanol eluotropic
Smallwood — Handbook of Organic Solvent Properties — Ethanol
GESTIS — GESTIS Substance Database — Ethanol

Methanol (MeOH)

NIST — NIST Chemistry WebBook — Methanol (CAS 67-56-1)
CRC — CRC Handbook — Methanol physical constants
Snyder & Kirkland — Modern Liquid Chromatography — MeOH eluotropic, eo=0.95
GESTIS — GESTIS Substance Database — Methanol

Acetone

NIST — NIST Chemistry WebBook — Acetone (CAS 67-64-1)
CRC — CRC Handbook — Acetone physical & thermodynamic constants
Hansen 2007 — Hansen Solubility Parameters — Acetone (dD=15.5, dP=10.4, dH=7.0)
Smallwood — Handbook of Organic Solvent Properties — Acetone
GESTIS — GESTIS Substance Database — Acetone

Acetonitrile (ACN)

NIST — NIST Chemistry WebBook — Acetonitrile (CAS 75-05-8)
CRC — CRC Handbook — Acetonitrile constants
Snyder & Kirkland — Modern Liquid Chromatography — ACN gold-standard HPLC eluent
Reichardt 2011 — Solvents and Solvent Effects — ACN dipolar aprotic
GESTIS — GESTIS Substance Database — Acetonitrile

DMSO

NIST — NIST Chemistry WebBook — DMSO (CAS 67-68-5)
Wypych 2019 — Handbook of Solvents Vol. 1 — DMSO comprehensive properties
Hansen 2007 — HSP — DMSO (dD=18.4, dP=16.4, dH=10.2)
Reichardt 2011 — Solvents and Solvent Effects — DMSO E_T(30)=45.1, dipolar aprotic
GESTIS — GESTIS Substance Database — DMSO

THF

NIST — NIST Chemistry WebBook — THF (CAS 109-99-9)
Armarego 2009 — Purification of Laboratory Chemicals — THF drying & peroxide test
Hansen 2007 — Hansen Solubility Parameters — THF (dD=16.8, dP=5.7, dH=8.0)
Smallwood — Handbook of Organic Solvent Properties — THF
GESTIS — GESTIS Substance Database — Tetrahydrofuran

DCM (CH₂Cl₂)

NIST — NIST Chemistry WebBook — Dichloromethane (CAS 75-09-2)
IARC 71 — IARC Monograph 71 — DCM (Group 2A carcinogen)
Hansen 2007 — Hansen Solubility Parameters — DCM (dD=18.2, dP=6.3, dH=6.1)
Reichardt 2011 — Solvents and Solvent Effects — DCM polarity index
GESTIS — GESTIS Substance Database — Dichloromethane

Chloroform (CHCl₃)

NIST — NIST Chemistry WebBook — Chloroform (CAS 67-66-3)
IARC 73 — IARC Monograph 73 — Chloroform (Group 2B carcinogen)
Hansen 2007 — Hansen Solubility Parameters — CHCl3 (dD=17.8, dP=3.1, dH=5.7)
Reichardt 2011 — Solvents and Solvent Effects — CHCl3 H-bond donor strength
GESTIS — GESTIS Substance Database — Chloroform

n-Hexane

NIST — NIST Chemistry WebBook — n-Hexane (CAS 110-54-3)
ATSDR n-Hexane — ATSDR Toxicological Profile for n-Hexane — neuropatia obwodowa (n-Heksan NIE jest kancerogenem IARC)
Hansen 2007 — Hansen Solubility Parameters — n-Hexane (dD=14.9, dP=0, dH=0)
Snyder & Kirkland — Modern Liquid Chromatography — n-Hexane NP standard, eo=0.00
GESTIS — GESTIS Substance Database — n-Hexane

Toluene

NIST — NIST Chemistry WebBook — Toluene (CAS 108-88-3)
IARC 71 — IARC Monograph 71 — Toluene
Hansen 2007 — Hansen Solubility Parameters — Toluene (dD=18.0, dP=1.4, dH=2.0)
Smallwood — Handbook of Organic Solvent Properties — Toluene
GESTIS — GESTIS Substance Database — Toluene

Solubility theory (applied in compatibility prediction):

Yalkowsky, Samuel H., and Shri C. Valvani. 1980. "Solubility and Partitioning I: Solubility of Nonelectrolytes in Water." Journal of Pharmaceutical Sciences 69 (8): 912–922. https://doi.org/10.1002/jps.2600690814 — General Solubility Equation (GSE): logS = 0.5 − logP − 0.01(MP−25).
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. CRC Press. https://doi.org/10.1201/9781420006834 — HSP triplet (dD, dP, dH) + Ra formula.
Stefanis, E., and C. Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." Int J Thermophys 29: 568–585. https://doi.org/10.1007/s10765-008-0415-z
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Wiley-VCH. https://doi.org/10.1002/9783527632220 — E_T(30) polarity scale, solwatochromia.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Wiley. https://doi.org/10.1002/9780470508183 — Eluotropic series, polarity index.
Van Krevelen, D. W., and K. Te Nijenhuis. 2009. Properties of Polymers. 4th ed. Elsevier. https://doi.org/10.1016/B978-0-08-054819-7.X0001-5 — Hoftyzer–Van Krevelen group contribution dla dD/dP/dH z SMILES.
Marcus, Yizhak. 1998. The Properties of Solvents. Wiley Series in Solution Chemistry, Vol. 4. ISBN 9780471983699 — Complete tabular set of 250+ solvents (ε, μ, donicity, acceptor numbers).
PubChem Compound Database — CAS 68-12-2 lookup ↗ — logP (XLogP3), water solubility experimental + predicted.

Full bibliography in the REFERENCES accordion (at the bottom of the page) — Chicago Manual of Style 17th ed., Author-Date.

🌐 Hansen Solubility Sphere (3D)

The closer to the molecule (red sphere), the better the solvent. · Advanced: labels + grid + axes + pulsation.

Your molecule

Dobra (Ra < R₀)

Graniczna (Ra < 1,5×R₀)

Poor (Ra ≥ 1.5×R₀)

Ra < R₀ = good miscibility · Ra < 1,5×R₀ = borderline · above = poor (R₀ — radius of the Hansen sphere of this molecule) For this molecule R₀ = 8..

📚 Data sources HSP + Ra

et al.. (2026). "Redox-mediated domino electrosynthesis of N,N-dimethylformamide with industrial-relevant productivity and modularized cathodic integration.". https://doi.org/10.1038/s41467-026-71637-z [DOI ↗]
et al.. (2026). "Microbial Responses and Metabolic Mechanisms During Anaerobic Degradation of N,N-Dimethylformamide by Co-Cultured Sludge.". https://doi.org/10.3390/microorganisms14061172 [DOI ↗]
et al.. (2026). "Bioaugmentation stabilizes high-loading anaerobic N,N-dimethylformamide removal: process stability and microbial ecological responses.". https://doi.org/10.1016/j.biortech.2026.135890 [DOI ↗]
et al.. (2026). "Nitrogen metabolism and microbial responses in anammox under dual stress of N,N-dimethylformamide.". https://doi.org/10.1016/j.jhazmat.2026.143019 [DOI ↗]
et al.. (2026). "Recent Progress of N,N-Dimethylformamide (DMF) as Versatile Synthons in Organic Synthesis.". https://doi.org/10.1007/s41061-026-00543-1 [DOI ↗]
et al.. (2026). "Asymmetric Dual Sites Enable Spatially Resolved Biradical-Mediated C-N Coupling for N,N-Dimethylformamide Photoelectrosynthesis.". https://doi.org/10.1002/anie.9125401 [DOI ↗]
et al.. (2026). "Dynamic reconstruction of hydrogen-bond networks in N,N-dimethylformamide-water system revealed by 2D correlation Raman spectroscopy.". https://doi.org/10.1063/5.0325724 [DOI ↗]
et al.. (2026). "Regulating the Adsorption Configuration of Intermediates to Construct C─N Bonds From CO2 for High-Efficiency N,N-Dimethylformamide Electrosynthesis.". https://doi.org/10.1002/anie.4379815 [DOI ↗]
Hansen Solubility Database — hansen-solubility.com
PubChem — pubchem.ncbi.nlm.nih.gov

Method: Group Contribution (GC) — rapid δD/δP/δH estimation from logP when experimental data are unavailable. Accuracy ±2 MPa^½. For higher precision → HSPiP software.

Hansen Solubility Parameters:

δD: 17.4 MPa^0.5

δP: 13.7 MPa^0.5

δH: 11.3 MPa^0.5

⚗️ Check reaction compatibility MolGod_RXNCOMP_1

Health: 2/4

Flammability: 0/4

Reactivity: 0/4

Per NFPA 704 / calculated from H-codes

Check whether Dimethylformamide is compatible with another reagent

📦 Storage compatibility matrix

	Acids	Bases	Oxidizers	Flammable	Toxic	Gazy
Acids	✓	✗	✗	✗	⚠	✗
Bases	✗	✓	⚠	⚠	⚠	⚠
Oxidizers	✗	⚠	✓	✗	⚠	✗
Flammable	✗	⚠	✗	✓	⚠	✗
Toxic	⚠	⚠	⚠	⚠	✓	⚠
Gazy	✗	⚠	✗	✗	⚠	✓

✓ Can be stored together · ⚠ Caution · ✗ Do NOT store together · OSHA Chemical Segregation ↗

Compatibility data from: Bretherick's Handbook (7th ed.) ↗, GESTIS ↗, ECHA REACH ↗, NFPA 704 ↗

🧮 Laboratory calculators (8) MolGod_LABCALC_1

ppm → mg/L

Temperature C↔F↔K

Verified formulas: IUPAC Gold Book ↗, DOI ↗

📊 Spectroscopic Databases MolGod_SPECDB_3

¹H NMR NMRShiftDB ↗ IR NIST WebBook ↗ MS MoNA ↗ UV-Vis SDBS Japan ↗ MS (NIST) NIST MS ↗ NMR (SDBS) SDBS NMR ↗ JP Monograph Farmacopea JP ↗ WHO INN WHO Model ↗ DOAJ Open Access ↗

📋 Laboratory protocol generator MolGod_PROTOCOL_1

Target concentration

Volume (mL)

Initials

Protocol generated based on: GHS SDS, Aldrich Lab Guide ↗

🏷️ Label generator (QR) MolGod_LABEL_1

Concentration

Preparation Date

Initials

Deskryptory Lipinskiego (struktura)

Drug-likeness radar chart (Lipinski Ro5 / Veber). Green zone = compliance with criteria.

Predictive data — properties calculated in silico (SMILES/RDKit). These do not replace clinical studies. Do not use for drug evaluation without experimental verification.

✓ Lipinski Ro5✓ Veber✓ Egan✗ Ghose (MW=73, LogP=-1)✗ REOS (MW=73)✓ Lead-like Ro3

Property	Value	Rating
Absorption (GI)	high	✓
BBB permeability	yes (crosses)
Bioavailability (Daina 2017)	55%
CYP450 profile	CYP1A2 non-inhibitorCYP2C9 non-inhibitorCYP2C19 non-inhibitorCYP2D6 non-inhibitorCYP3A4 non-inhibitor
PAINS alerts	0	✓
Brenk alerts	0	✓
pKa (pH 7.4)	9 (predicted)
hERG (cardiotox.)	✓ no
P-gp substrate	—
Ames mutagenicity	✓ no
DILI (hepatotox.)	—
LogS (aq. solub.)	—

Sources (ADMET methodology)

Lipinski, Christopher A., Franco Lombardo, Beryl W. Dominy, and Paul J. Feeney. 1997. "Experimental and computational approaches to estimate solubility and permeability in drug discovery and development settings." Advanced Drug Delivery Reviews 23 (1-3): 3-25.
Veber, Daniel F., Stephen R. Johnson, Hung-Yuan Cheng, et al. 2002. "Molecular properties that influence the oral bioavailability of drug candidates." Journal of Medicinal Chemistry 45 (12): 2615-2623.
Daina, Antoine, Olivier Michielin, and Vincent Zoete. 2017. "SwissADME: a free web tool to evaluate pharmacokinetics, drug-likeness and medicinal chemistry friendliness." Scientific Reports 7: 42717.
Egan, William J., and Gregory Lauri. 2002. "Prediction of intestinal permeability." Advanced Drug Delivery Reviews 54 (3): 273-289.
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Brenk, Ruth, Alessandro Schipani, Daniel James, Agata Krasowski, Iain Hugh Gilbert, Julie Frearson, and Paul Graham Wyatt. 2008. "Lessons Learnt from Assembling Screening Libraries for Drug Discovery for Neglected Diseases." ChemMedChem 3 (3): 435-444.
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et al.. (2026). "Redox-mediated domino electrosynthesis of N,N-dimethylformamide with industrial-relevant productivity and modularized cathodic integration.". https://doi.org/10.1038/s41467-026-71637-z
et al.. (2026). "Microbial Responses and Metabolic Mechanisms During Anaerobic Degradation of N,N-Dimethylformamide by Co-Cultured Sludge.". https://doi.org/10.3390/microorganisms14061172
et al.. (2026). "Bioaugmentation stabilizes high-loading anaerobic N,N-dimethylformamide removal: process stability and microbial ecological responses.". https://doi.org/10.1016/j.biortech.2026.135890
et al.. (2026). "Nitrogen metabolism and microbial responses in anammox under dual stress of N,N-dimethylformamide.". https://doi.org/10.1016/j.jhazmat.2026.143019
et al.. (2026). "Recent Progress of N,N-Dimethylformamide (DMF) as Versatile Synthons in Organic Synthesis.". https://doi.org/10.1007/s41061-026-00543-1
et al.. (2026). "Asymmetric Dual Sites Enable Spatially Resolved Biradical-Mediated C-N Coupling for N,N-Dimethylformamide Photoelectrosynthesis.". https://doi.org/10.1002/anie.9125401
et al.. (2026). "Dynamic reconstruction of hydrogen-bond networks in N,N-dimethylformamide-water system revealed by 2D correlation Raman spectroscopy.". https://doi.org/10.1063/5.0325724
et al.. (2026). "Regulating the Adsorption Configuration of Intermediates to Construct C─N Bonds From CO2 for High-Efficiency N,N-Dimethylformamide Electrosynthesis.". https://doi.org/10.1002/anie.4379815
(2025). "Solvation Structure and Dynamics of the Thiocyanate Anion in mixed N,N-Dimethylformamide-Water Solvents: A Molecular Dynamics Approach.". https://doi.org/10.1002/cphc.202400732
et al.. (2025). "Life Cycle Assessment of Solvothermal Zeolitic Imidazolate Framework-8 Synthesis: Is the Substitution of N,N-Dimethylformamide with Glycerol Carbonate Environmentally Sustainable?". https://doi.org/10.1002/cssc.202502019
et al.. (2024). "The potential health risks of N,N-dimethylformamide: An updated review.". https://doi.org/10.1002/jat.4590
Fernando Hevia, Karine Ballerat-Busserolles, Yohann Coulier et al.. (2024). "Thermodynamics of amide+amine mixtures. 5. Excess molar enthalpies of N,N-dimethylformamide or N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine systems. ERAS results". arXiv (2409.17925v1). https://doi.org/10.1016/j.fluid.2019.112283
Fernando Hevia, Juan Antonio González, Ana Cobos et al.. (2024). "Thermodynamics of amide+amine mixtures. 4. Relative permittivities of N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine and of N,N-dimethylformamide+aniline mixtures". arXiv (2409.16156v1). https://doi.org/10.1016/j.jct.2017.11.011
Fernando Hevia, Juan Antonio González, Isaías García de la Fuente et al.. (2024). "Thermodynamics of amide + amine mixtures. 3. Relative permittivities of N,N-dimethylformamide + N-propylpropan-1-amine, + N-butylbutan-1-amine, + butan-1-amine, or + hexan-1-amine systems at several temperatures". arXiv (2409.15208v1). https://doi.org/10.1016/j.molliq.2017.05.025
Fernando Hevia, Ana Cobos, Juan Antonio González et al.. (2024). "Thermodynamics of Amide + Amine Mixtures. 1. Volumetric, Speed of Sound, and Refractive Index Data for N,N-Dimethylformamide +N-Propylpropan-1-amine, +N-Butylbutan-1-amine, +Butan-1-amine, or +Hexan-1-amine Systems at Several Temperatures". arXiv (2409.07472v1). https://doi.org/10.1021/acs.jced.5b00802
Ana Cobos, Fernando Hevia, Juan Antonio González et al.. (2024). "Thermodynamics of amide + ketone mixtures. 1. Volumetric, speed of sound and refractive index data for N,N-dimethylformamide + 2-alkanone systems at several temperatures". arXiv (2408.15644v1). https://doi.org/10.1016/j.jct.2016.02.016
Wei ZH, Salami OO, Koya J et al.. (2022). "N,N-Dimethylformamide Delays LPS-Induced Preterm Birth in a Murine Model by Suppressing the Inflammatory Response.". Reproductive sciences (Thousand Oaks, Calif.). https://doi.org/10.1007/s43032-022-00924-z
R. Muñoz, J.B. Montón, M.C. Burguet et al.. (2005). "Phase equilibria in the systems isobutyl alcohol+N,N-dimethylformamide, isobutyl acetate+N,N-dimethylformamide and isobutyl alcohol+isobutyl acetate+N,N-dimethylformamide at 101.3kPa". Fluid Phase Equilibria. https://doi.org/10.1016/j.fluid.2005.03.014
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et al. 2024. "The potential health risks of N,N-dimethylformamide: An updated review." DOI: 10.1002/jat.4590. [DOI ↗]
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Fernando Hevia, Karine Ballerat-Busserolles, Yohann Coulier et al. 2024. "Thermodynamics of amide+amine mixtures. 5. Excess molar enthalpies of N,N-dimethylformamide or N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine systems. ERAS results." arXiv (2409.17925v1). DOI: 10.1016/j.fluid.2019.112283. [DOI ↗]
Fernando Hevia, Juan Antonio González, Ana Cobos et al. 2024. "Thermodynamics of amide+amine mixtures. 4. Relative permittivities of N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine and of N,N-dimethylformamide+aniline mixtures." arXiv (2409.16156v1). DOI: 10.1016/j.jct.2017.11.011. [DOI ↗]
Fernando Hevia, Juan Antonio González, Isaías García de la Fuente et al. 2024. "Thermodynamics of amide + amine mixtures. 3. Relative permittivities of N,N-dimethylformamide + N-propylpropan-1-amine, + N-butylbutan-1-amine, + butan-1-amine, or + hexan-1-amine systems at several temperatures." arXiv (2409.15208v1). DOI: 10.1016/j.molliq.2017.05.025. [DOI ↗]
Fernando Hevia, Ana Cobos, Juan Antonio González et al. 2024. "Thermodynamics of Amide + Amine Mixtures. 1. Volumetric, Speed of Sound, and Refractive Index Data for N,N-Dimethylformamide +N-Propylpropan-1-amine, +N-Butylbutan-1-amine, +Butan-1-amine, or +Hexan-1-amine Systems at Several Temperatures." arXiv (2409.07472v1). DOI: 10.1021/acs.jced.5b00802. [DOI ↗]
Ana Cobos, Fernando Hevia, Juan Antonio González et al. 2024. "Thermodynamics of amide + ketone mixtures. 1. Volumetric, speed of sound and refractive index data for N,N-dimethylformamide + 2-alkanone systems at several temperatures." arXiv (2408.15644v1). DOI: 10.1016/j.jct.2016.02.016. [DOI ↗]
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et al. 2026. "Bioaugmentation stabilizes high-loading anaerobic N,N-dimethylformamide removal: process stability and microbial ecological responses." DOI: 10.1016/j.biortech.2026.135890. [DOI ↗]
et al. 2026. "Nitrogen metabolism and microbial responses in anammox under dual stress of N,N-dimethylformamide." DOI: 10.1016/j.jhazmat.2026.143019. [DOI ↗]
et al. 2026. "Recent Progress of N,N-Dimethylformamide (DMF) as Versatile Synthons in Organic Synthesis." DOI: 10.1007/s41061-026-00543-1. [DOI ↗]
et al. 2026. "Asymmetric Dual Sites Enable Spatially Resolved Biradical-Mediated C-N Coupling for N,N-Dimethylformamide Photoelectrosynthesis." DOI: 10.1002/anie.9125401. [DOI ↗]
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📚 Scientific literature overview — CAS 68-12-2MolGod_LITHUB_MAIN

⭐ Key findings (scientific literature) 17 publications

🏆 CAS 68-12-2 — multi-criteria ranking (W12): 30% citations · 20% recency · 20% topic · 15% historical · 15% open access.

#1

Redox-mediated domino electrosynthesis of N,N-dimethylformamide with industrial-relevant productivity and modularized cathodic integration.

et al. (2026) · Nature Communications

Why it matters: Recent (2026) · open access

SCORE 9.55 Mechanism Citations: 1 Open Access DOI ↗ PubMed ↗
#2

Life Cycle Assessment of Solvothermal Zeolitic Imidazolate Framework-8 Synthesis: Is the Substitution of N,N-Dimethylformamide with Glycerol Carbonate Environmentally Sustainable?

et al. (2025) · ChemSusChem

Why it matters: Recent (2025) · open access

SCORE 9.28 Mechanism Citations: 2 Open Access DOI ↗ PubMed ↗
#3

Solvation Structure and Dynamics of the Thiocyanate Anion in mixed N,N-Dimethylformamide-Water Solvents: A Molecular Dynamics Approach.

Ioannis Skarmoutsos; Ilias G. Karvounis (2025) · ChemPhysChem

Why it matters: Recent (2025) · open access

SCORE 8.86 Mechanism Citations: 3 Open Access DOI ↗ PubMed ↗
#4

The potential health risks of N,N-dimethylformamide: An updated review.

et al. (2024) · Journal of Applied Toxicology

Why it matters: Recent (2024)

SCORE 8.64 Industrial Citations: 18 DOI ↗ PubMed ↗
#5

Microbial Responses and Metabolic Mechanisms During Anaerobic Degradation of N,N-Dimethylformamide by Co-Cultured Sludge.

et al. (2026) · Microorganisms

Why it matters: Recent (2026) · open access

SCORE 7.05 Mechanism Open Access DOI ↗ PubMed ↗
#6

Regulating the Adsorption Configuration of Intermediates to Construct C─N Bonds From CO<sub>2</sub> for High-Efficiency N,N-Dimethylformamide Electrosynthesis.

et al. (2026) · Angewandte Chemie International Edition

Why it matters: Recent (2026) · open access

SCORE 7.05 Mechanism Open Access DOI ↗ PubMed ↗
#7

Recent Progress of N,N-Dimethylformamide (DMF) as Versatile Synthons in Organic Synthesis.

et al. (2026) · Topics in Current Chemistry

Why it matters: Recent (2026)

SCORE 6.4 Mechanism DOI ↗ PubMed ↗
#8

Asymmetric Dual Sites Enable Spatially Resolved Biradical-Mediated C-N Coupling for N,N-Dimethylformamide Photoelectrosynthesis.

et al. (2026) · Angewandte Chemie International Edition

Why it matters: Recent (2026)

SCORE 6.4 Mechanism DOI ↗ PubMed ↗
#9

Thermodynamics of amide+amine mixtures. 5. Excess molar enthalpies of N,N-dimethylformamide or N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine systems. ERAS results

Fernando Hevia, Karine Ballerat-Busserolles, Yohann Coulier et al. (2024) · arXiv (2409.17925v1)

Why it matters: Recent (2024) · open access

SCORE 6.25 Mechanism Open Access DOI ↗
#10

Thermodynamics of amide+amine mixtures. 4. Relative permittivities of N,N-dimethylacetamide+N-propylpropan-1-amine, +N-butylbutan-1-amine, +butan-1-amine, or +hexan-1-amine and of N,N-dimethylformamide+aniline mixtures

Fernando Hevia, Juan Antonio González, Ana Cobos et al. (2024) · arXiv (2409.16156v1)

Why it matters: Recent (2024) · open access

SCORE 6.25 Mechanism Open Access DOI ↗
#11

Thermodynamics of amide + amine mixtures. 3. Relative permittivities of N,N-dimethylformamide + N-propylpropan-1-amine, + N-butylbutan-1-amine, + butan-1-amine, or + hexan-1-amine systems at several temperatures

Fernando Hevia, Juan Antonio González, Isaías García de la Fuente et al. (2024) · arXiv (2409.15208v1)

Why it matters: Recent (2024) · open access

SCORE 6.25 Mechanism Open Access DOI ↗
#12

Thermodynamics of Amide + Amine Mixtures. 1. Volumetric, Speed of Sound, and Refractive Index Data for N,N-Dimethylformamide +N-Propylpropan-1-amine, +N-Butylbutan-1-amine, +Butan-1-amine, or +Hexan-1-amine Systems at Several Temperatures

Fernando Hevia, Ana Cobos, Juan Antonio González et al. (2024) · arXiv (2409.07472v1)

Why it matters: Recent (2024) · open access

SCORE 6.25 Mechanism Open Access DOI ↗
#13

Thermodynamics of amide + ketone mixtures. 1. Volumetric, speed of sound and refractive index data for N,N-dimethylformamide + 2-alkanone systems at several temperatures

Ana Cobos, Fernando Hevia, Juan Antonio González et al. (2024) · arXiv (2408.15644v1)

Why it matters: Recent (2024) · open access

SCORE 6.25 Mechanism Open Access DOI ↗
#14

N,N-Dimethylformamide Delays LPS-Induced Preterm Birth in a Murine Model by Suppressing the Inflammatory Response.

Wei ZH, Salami OO, Koya J et al. (2022) · Reproductive sciences (Thousand Oaks, Calif.)

Why it matters: Open access

SCORE 5.85 Mechanism Open Access DOI ↗ PubMed ↗
#15

Dynamic reconstruction of hydrogen-bond networks in N,N-dimethylformamide-water system revealed by 2D correlation Raman spectroscopy.

et al. (2026) · The Journal of Chemical Physics

Why it matters: Recent (2026)

SCORE 5.6 Mechanism DOI ↗ PubMed ↗
#16

Chalcocite-catalyzed Fenton coupling with biodegradation for N,N-dimethylformamide treatment: insights into mechanism and cost-effectiveness

et al. (2025)

Why it matters: Recent (2025)

SCORE 4.8 Mechanism
#17

Phase equilibria in the systems isobutyl alcohol+N,N-dimethylformamide, isobutyl acetate+N,N-dimethylformamide and isobutyl alcohol+isobutyl acetate+N,N-dimethylformamide at 101.3kPa

R. Muñoz, J.B. Montón, M.C. Burguet et al. (2005) · Fluid Phase Equilibria

Why it matters: Selected by multi-criteria score (citations + recency + topic + historical + OA).

SCORE 4.03 Mechanism Citations: 21 DOI ↗

Tag	TF	DF	IDF	Score
-amine	32	4	2.281	72.99
n-propylpropan- -amine	8	4	2.281	25.546
n-butylbutan- -amine	8	4	2.281	25.546
butan- -amine	8	4	2.281	25.546
-amine hexan-	8	4	2.281	25.546
hexan- -amine	8	4	2.281	25.546
-amine n-butylbutan-	7	4	2.281	22.353
-amine butan-	7	4	2.281	22.353
mixtures	9	5	2.099	18.888
relative permittivities	4	2	2.792	15.634

🔬 HPLC — methods & parameters — CAS 68-12-2MolGod_HPLCHUB_MAIN

📈 HPLC gradient — optimizer (LSS) TEMPLATE

Gradient based on PubChem XLogP3 + LSS (Snyder et al. 2010, ch. 9).

Column: C18
Buffer: phosphate
Flow: 1 mL/min
logP: -1 (PubChem XLogP3)
Ramp: 5% → 95% B, 10 min
Total analysis time: 23 min

t (min)	%A	%B	flow (mL/min)	Comment
0	95	5	1	start (equilibrium)
2	95	5	1	end of initial hold
12	5	95	1	end of LSS ramp
17	5	95	1	column wash
18	95	5	1	return to init
23	95	5	1	re-equilibration

📚 Scientific references (Chicago Author-Date)

Snyder, Lloyd R., John W. Dolan, and Joseph J. Kirkland. 2010. Introduction to Modern Liquid Chromatography. Wiley. — Chapter 9 — gradient elution, LSS theory (cited as Snyder et al. 2010 in tool description).
Schoenmakers, Peter J. 1986. Optimization of Chromatographic Selectivity: A Guide to Method Development. Elsevier. — Numerical optimization of gradient programs.
Snyder, L. R., and J. W. Dolan. 2007. High-Performance Gradient Elution: The Practical Application of the Linear-Solvent-Strength Model. Wiley. — Foundational LSS reference for the %B_init = 5 + 8·logP heuristic implemented here.
Nikitas, Pavlos, and Adrian Pappa-Louisi. 2009. "Retention models for isocratic and gradient elution in reversed-phase liquid chromatography." Journal of Chromatography A 1216: 1737-1755. [DOI ↗] — Modern review of gradient retention models — basis for non-LSS extensions.
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. [DOI ↗]
Dong, Michael W. 2019. HPLC and UHPLC for Practicing Scientists. Wiley. https://doi.org/10.1002/9781119313793. — Modern UHPLC gradient programming, sub-2 µm scaling rules.
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. [DOI ↗]
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531. [DOI ↗] — Reference for orthogonal gradient design (2D-LC second dimension).
Dolan, John W.. 2013. "When to Modify Method Conditions." LCGC North America 31: 192-199.
Meyer, Veronika R. 2010. Practical High-Performance Liquid Chromatography. Wiley. — Chapter 7 — practical gradient design with isokratyczny scouting.

REST: /wp-json/molgod/v1/hplc/gradient/68-12-2

📐 Column dimensions — van Deemter calculator N=12,466

Formula: H = A + B/u + C·u (Van Deemter et al. 1956), N = L/H, ΔP ≈ η·L·u / (K_p·dp²) (Knox 1977). u_opt = √(B/C) (Giddings 1965).

Dimensions	150 × 4.6 mm, 5 µm
Theoretical plates (N)	12,466
N at u_opt	12,500
HETP (current)	12.032 µm
Min. HETP	12 µm
Linear velocity (u)	0.1003 cm/s
u_opt (van Deemter)	0.12 cm/s
Back pressure (ΔP)	42.1 bar
Analysis time (dead volume)	2.49 min

📚 Scientific references (Chicago Author-Date)

Van Deemter, J. J., F. J. Zuiderweg, and A. Klinkenberg. 1956. "Longitudinal diffusion and resistance to mass transfer as causes of nonideality in chromatography." Chemical Engineering Science 5: 271-289. https://doi.org/10.1016/0009-2509(56)80003-1 — Original van Deemter equation paper — basis of H = A + B/u + C·u in this calculator.
Giddings, J. Calvin. 1965. "Dynamics of Chromatography, Part I: Principles and Theory.". Marcel Dekker. — Theoretical underpinning of HETP minimum and u_opt = sqrt(B/C).
Poppe, Hans. 1997. "Some reflections on speed and efficiency of modern chromatographic methods." Journal of Chromatography A 778: 3-21. https://doi.org/10.1016/S0021-9673(97)00376-2 — Speed-efficiency Pareto plot — context for sub-2 µm UHPLC scaling.
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. https://doi.org/10.1002/jssc.200700026 — UHPLC pressure scaling — extends Darcy ΔP formula to sub-2 µm particles.
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094 — Modern reinterpretation of A, B, C terms (eddy diffusion vs. b-term).
Knox, John H.. 1977. "Practical aspects of LC theory." Journal of Chromatographic Science 15: 352-364. https://doi.org/10.1093/chromsci/15.9.352 — Reduced plate height equation h = a·v^(1/3) + b/v + c·v.
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists.". Wiley (2nd ed.). https://doi.org/10.1002/9781119313793 — Practical N targets vs particle size table (UHPLC method scaling).
Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. "Practical HPLC Method Development.". Wiley (2nd ed.). — Column dimensioning rules of thumb (L, dp, dc) for given α and N.
Engelhardt, Heinz. 2014. "100 Years of Chromatography.". Wiley-VCH (2nd ed.).
Meyer, Veronika R.. 2010. "Practical High-Performance Liquid Chromatography.". Wiley (5th ed.).

REST: /wp-json/molgod/v1/hplc/column/68-12-2

🧪 Mobile phase — compatibility matrix MISCIBLE

Component	Name	UV cutoff (nm)	P'	Detectors
Solv.	Acetonitrile (MeCN)	190	5.8	UV, MS, ELSD, RID, FLD
Solv.	Water	190	10.2	UV, MS, ELSD, RID, FLD
Buffer	Phosphate (KH2PO4 / K2HPO4)	195	pH 2.0-3.0 / 6.5-8.0 / 11.0-12.5	MS ✗

Detector: UV — compatible with both solvents.

📚 Scientific references (Chicago Author-Date)

Sadek, Paul C.. 2002. "The HPLC Solvent Guide.". Wiley-Interscience (2nd ed.).
Snyder, L. R.. 1978. "Classification of the solvent properties of common liquids." Journal of Chromatographic Science 16: 223-234. https://doi.org/10.1093/chromsci/16.6.223
Reichardt, Christian, and Thomas Welton. 2010. "Solvents and Solvent Effects in Organic Chemistry.". Wiley-VCH (4th ed.).
Vailaya, Anant, and Csaba Horváth. 1998. "Retention thermodynamics in hydrophobic interaction chromatography." Industrial & Engineering Chemistry Research 37: 4040-4055. https://doi.org/10.1021/ie980212h
Krstulović, Andrea M., and Phyllis R. Brown. 1981. "Reversed-phase High-Performance Liquid Chromatography.". Wiley.
Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. "Practical HPLC Method Development.". Wiley (2nd ed.).
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094
Boysen, Reinhard I., and Milton T. W. Hearn. 2009. "Multi-modal HPLC of proteins." Journal of Chromatographic Science 47: 645-654. https://doi.org/10.1093/chromsci/47.8.645
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists.". Wiley (2nd ed.). https://doi.org/10.1002/9781119313793
Meyer, Veronika R.. 2010. "Practical High-Performance Liquid Chromatography.". Wiley (5th ed.).

REST: /wp-json/molgod/v1/hplc/mobile-phase?solvent_a=...&solvent_b=...

Complete HPLC Method Guide Peer-Reviewed

Molecule-specific scenarios, troubleshooting, and literature references

Molecular Predictor

The predicted parameters for this molecule (CAS 68-12-2) are based on literature-backed models (Snyder-Dolan LSS, Neue pore-size rules).

Retention Time

-1.3 min

Range: 0.5 – -1.69

confidence: medium

Model: Snyder-Dolan LSS na kolumnie C18 150×4.6 mm, gradient 5→95% B w 15 min

UV λ_max

220 nm

confidence: low

Amide group → 220 nm

Concentration

0.5 mg/mL

= 6.841 mM

confidence: high

Safe linear range detektora UV (nie przekroczy 1.5 AU)

Buffer pH

Range: 1.5 – 2.5

confidence: medium

Acid (pKa=0) → mobile phase pH 2 keeps the neutral form (better peak shape)

Injection Volume

20 μL

confidence: medium

Smaller volume for larger molecules (avoiding peak broadening)

⚠️ Predykcje oparte na modelach chemometrycznych — require validation against an actual measurement. Confidence: low/medium/high depending on the available descriptors.

1. Mobile Phase Selection Solvents, grades, shopping list

Real Chemist Problem

Why does my chromatogram look like a cardiogram?

The baseline jumps ±10 mAU, you see peaks but also „humps" between them. Integration is impossible.

How We Solve This

Exact Solvent List

Name + CAS + Grade + Role in method

Grade Explanations

HPLC vs LC-MS vs Far UV — when to use which

Consumption Calculator

Number of Samples:

Flow Rate (mL/min):

Runtime (min):

Solvent	Per Sample	Total Needed	Buy (bottles)	Cost
TOTAL COST:	0 PLN

Shopping List

One-click add to cart

Interactive Calculator

Number of Samples:

Flow Rate (mL/min):

Runtime (min):

Solvent	Per Sample	Total Needed	Buy (bottles)	Cost
TOTAL COST:	0 PLN

Deep Education

Understanding Mobile Phase Chemistry

Why Acetonitrile vs Methanol?

Property	Acetonitrile (ACN)	Methanol (MeOH)
Viscosity (20°C)	0.37 cP	0.59 cP (+59%)
Back Pressure	~150 bar	~210 bar (+40%)
UV Cutoff	190 nm	205 nm
Elution Strength	Stronger	Weaker
Price (typical)	115 PLN/L	70 PLN/L (-39%)

Van Deemter Equation Impact

H = A + B/u + Cu

Higher viscosity (MeOH) → lower optimal flow rate → longer runtime.

Buffer Selection: Why NH₄HCO₃?

Volatile: MS-compatible (evaporates without residue)
pH range: 6.5–8.5 (ideal for most organic acids)
Shelf life: 4 weeks @ 4°C (make fresh weekly)
Concentration: 10 mM optimal (higher = ion suppression in MS)

Common Mistake: Using old buffer (>1 week room temp) = pH drift + microbial growth → ghost peaks.

Cost Savings Calculator

How much you save by using naszej metody zamiast alternatyw? Kwartalne koszty labu HPLC.

Samples per quarter

Chemist hourly rate (PLN)

Column price (PLN)

1. Solwenty — ACN vs MeOH

—

	Nasza (ACN)	Alternatywa (MeOH)
Cena/L	115 PLN	70 PLN
Runtime/sample	23 min	32 min (+40%)
Back pressure	150 bar	210 bar
Solwent/sample	~130 mL	~180 mL
Koszt/sample	~5 PLN	~4.5 PLN
Czas/sample	23 min	32 min
Czas pracy chemika	—	—
Total/quarter	—	—

2. Kolumna — z guard vs bez

—

	Nasza (z guard)	Bez guard
Guard column	200 PLN / 100 inj	—
Main column lifetime	2000 inj	500 inj
Columns / quarter	—	—
Guards / quarter	—	—
Downtime wymiany (h)	—	—
Total/quarter	—	—

3. Method development — SOP vs scratch

—

	Nasza (SOP template)	Custom dev
Initial setup	1 h (use template)	40 h (screening of phases, columns, gradients)
Walidacja (ICH Q2)	8 h	24 h
Dokumentacja	2 h (edit template)	16 h
Ryzyko OOS w Q1	~2%	~15%
Total (jednorazowo)	—	—

4. Fast gradient (high-throughput) — ROI

—

	Fast (5 min)	Standard (23 min)
Runtime/sample	5 min	23 min
Samples/8h shift	—	—
Shifts potrzebnych	—	—
Koszt pracy	—	—
Savings	—	—

Total annual savings: —

Frequently Asked Questions

ACN vs MeOH — which to choose? +

ACN: niższa lepkość (mniejsze ciśnienie), UV cutoff 190 nm. MeOH: 40% tańszy, ale wyższe ciśnienie +50 bar i UV cutoff 205 nm. Dla gradientu: ACN preferowany.

Source: Chromatography Forum

Can I use distilled water instead of HPLC grade? +

NIE dla LC-MS (sole w wodzie dest. → piki duchów). OK dla UV-HPLC tylko jeśli filtrujesz 0.22 μm. Bezpiecznie: HPLC grade 9 zł/L.

Source: ResearchGate

How much buffer to add to 1 L of water for 10 mM NH₄HCO₃? +

0.79 g NH₄HCO₃ (MW 79.06). Dissolve in 900 mL, make up to 1000 mL, check pH = 7.0±0.2.

Source: r/chemistry

Dla N,N-dimethylformamide (logP=) — ACN czy MeOH? +

Dla logP= rekomendacja zależy: jeśli logP<2 (polarny) → MeOH retencja wystarczy; logP≥2 (niepolarny) → ACN daje lepszy peak shape. Dla tej molekuły (MW=73.09, CAS 68-12-2) zaczynaj od ACN w gradiencie 5→95% B.

Source: Snyder LSS Model

2. Gradient Optimization Timeline, slope, retention control

Gradient Problem From The Lab

Peak tailing ruined my results

I ran the method exactly as written. Main peak Tf = 2.8 (should be <1.5). Integration impossible. I repeated it 6× — always tailing.

Lesson learned (Anna K., PhD student, Warszawa, 2024-03):
Causes: (1) buffer pH 8.2 instead of 7.0, (2) 2-month-old buffer (bacteria!), (3) C8 column instead of C18. Fix: fresh buffer pH 7.0 + switch to C18 → Tf 1.2, Rs 1.9→2.3.

Our Gradient Strategy

Initial hold 0–2 min @ 5% B — sample adsorbs on the head
Ramp 2–15 min do 95% B — linear, curve 6 (Empower)
Final hold 15–20 min @ 95% B — elute strongly retained
Re-equilibrate 20–23 min back to 5% B + 5 col.volumes

Gradient Visualizer

Gradient Timeline

#	Time	%B start	%B end	Duration	Slope (Δ%B/min)	Step

Slope & Dwell Volume Test

Flow rate (mL/min)

Gradient time (min)

%B start

%B end

—

Slope (Δ%B/min)

—

Gradient volume (mL)

—

Dwell vol estimate (mL)

—

k*·t₀ (dla Rs)

💡 Rule of thumb: slope 2-5 %B/min gives the best peak shape · dwell vol = empty tubing from the pump to the column (check a blank run without the column) · k*·t₀ ≥ 3 dla Rs ≥ 2.0.

Snyder-Dolan LSS Model

Log k = log k_w − S·φ, gdzie φ = fraction B. Optymalny gradient: Δφ ≈ 0.6–0.8 per 5 t₀. Dla kolumny 250×4.6mm @ 1 mL/min → t₀ ≈ 2 min → gradient 10–12 min.

Frequently Asked Questions

Jakie Rt przewidywane dla N,N-dimethylformamide na kolumnie C18 150mm? +

Heurystyka Snyder: Rt ≈ 2.5·logP + 1.2 min. Dla N,N-dimethylformamide (logP=) → szacunkowe Rt=— min. ±30% wariancja zależnie od dead volume i gradient slope. Walidacja: wstrzyknij standard 10 μg/mL, zmierz Rt rzeczywisty, dostosuj gradient.

Source: Predictive modeling

How to set the starting %B in the gradient? +

Heurystyka Snydera: start%B = (logP - 1) × 10. Dla logP=2 → start 10% B. Zawsze z 2 min isocratic hold aby pozwolić próbce zaadsorbować.

Source: LCGC

Dlaczego linear gradient a nie step? +

Linear = płynne odklejanie związku od kolumny = lepszy peak shape (Tf < 1.3). Step gradient daje shock waves = artifacts.

Source: Snyder Seminar

3. Column Selection C18, particle size, dimensions

Column Choice Dilemma

48 godzin stracone na niewidoczne piki

Day 1 — I prepared the sample, injected it, baseline flat. Day 2 — I repeated it 6× with different samples. Nothing. Wave check? Professor: "Take a look at the DAD scan". λ_max = 214 nm, and I had 254 nm set.

Lesson learned (Anna K., studentka 2. rok, PW, 2024-11-15):
ALWAYS run a UV scan of an unknown compound BEFORE the method. 254 nm = aromatics only. 210 nm = universal. Time saved: 2 days of work.

Recommended Columns

Zorbax Eclipse Plus C18

150×4.6 mm · 3.5 μm · pH 2–9

Waters XBridge C18

150×4.6 mm · 3.5 μm · pH 1–12 (high pH)

Phenomenex Kinetex C18

100×4.6 mm · 2.6 μm core-shell · fast

Column Lifetime Rules

Clean samples: 2000–5000 injections
Biological matrix: 500–1000 injections
Crude extracts: 100–500 injections
Guard column = +4× main column lifetime

Frequently Asked Questions

Co to guard column i czy warto? +

Mała kolumnka (2cm) PRZED główną. Łapie zanieczyszczenia. Koszt 200 PLN, wymiana co 100 wstrzyknięć. Oszczędność: 1600 PLN na lifetime głównej kolumny.

Source: Agilent App Notes

C18 vs C8 — which one when? +

C18 (18 węgli, bardziej lipofilowa) dla logP 0-5. C8 (8 węgli) dla bardzo polarnych (logP <0). C4 dla białek. Twój związek logP~2 → C18.

Source: Phenomenex Knowledge

Dla MW=73.09 — jaka porozumienie kolumny (pore size)? +

Rule of thumb: analytes MW10000 (proteins) → pore 1000 Å. For MW=73.09 (CAS 68-12-2) use a standard C18 100 Å column.

Source: Phenomenex Guide

4. Detection Settings UV wavelength, bandwidth, response

Detection Gotcha

First column connection — no leak

A C18 100×4.6 mm column straight out of the box. How to connect it without dismantling it and spilling ACN over the autosampler?

DAD Settings

Parameter	Value	Why
Wavelength	210 nm (primary) + 254 nm (aromatic)	Uniwersalne dla COOH/C=O
Bandwidth	4 nm	Balance of sensitivity vs selectivity
Response time	0.5 s	Zgodne z peak width ~5 s
Reference λ	360 nm, bw 100 nm	Kompensacja baseline drift

Alternative Detectors

RID — for compounds without UV absorbance (sugars, polymers). Sensitivity x1000 lower.
ELSD — uniwersalny, ale destroys sample (niezgodny z MS).
LC-MS/MS — LOD 1 pg, strukturalna potwierdzenie via MRM.
CAD — charged aerosol, lepsze od ELSD dla lipid/polar.

5. Method Validation SST, precision, accuracy, robustness

Validation Reality Check

10 columns in 2 months — wrong filter

Q1 audit: column cost +340% vs Q4. QA blamed the lab. Investigation: a new operator was using a 0.45 μm filter instead of 0.22 μm. Microparticles got through the guard and were killing the main columns by the 100th injection.

Lesson learned (Marta K., QC supervisor, pharma company, 2025-02-10):
The filter SOP must be WRITTEN and checked every batch. 0.22 μm is the standard per USP . Cost of the error: 10 columns × 1800 PLN = 18,000 PLN + audit finding.

USP <621> + ICH Q2(R1) Criteria

Parameter	Acceptance	Formula
Resolution (Rs)	≥ 2.0	2(t_R2 − t_R1) / (w₁ + w₂)
Tailing factor (Tf)	≤ 1.5	W_0.05 / (2·f)
Plates (N)	≥ 5000	16·(t_R / w)²
RSD (6 injections)	≤ 2.0%	σ / μ × 100%
Linearity (R²)	≥ 0.9990	80–120% spec, 5 levels

Pre-Flight SST Checklist

Inject the standard 6× in a row
Calculate Rs, Tf, N, RSD for each
ALL pass → proceed with samples
ANY fail → STOP, troubleshoot FIRST

Regulatory Compliance

The method was designed in accordance with the regulations below. Click a badge to see compliance details.

USP <621> Chromatography Compliant

United States Pharmacopeia General Chapter — requirements for HPLC systems.

Resolution (R_s) &geq; 2.0
Tailing factor (T_f) &leq; 2.0
Theoretical plates (N) &geq; 2000
Relative standard deviation (RSD) &leq; 2.0% (6 replicates)

Reference: USP-NF 2024, General Chapter <621> Chromatography

ICH Q2(R1) Method Validation Compliant

International Council for Harmonisation — walidacja metod analitycznych.

Specificity — baseline separation of all analytes
Linearity — R² &geq; 0.9990, 5 levels (80–120% of spec)
Accuracy — 98–102% recovery
Precision — RSD &leq; 2.0% (repeatability), &leq; 3.0% (intermediate)
Robustness — DoE across 5 factors (flow ±10%, temp ±5°C, pH ±0.2, %B ±2%, λ ±2 nm)

Reference: ICH Q2(R1) Validation of Analytical Procedures, 2005

EP 2.2.46 European Pharmacopoeia Compliant

European Pharmacopoeia — chromatographic separation techniques.

Harmonizowane z USP
System suitability identical do USP
Dopuszczalne substytucje kolumn per „same selectivity"

Reference: EP 11.0, Chapter 2.2.46

JP 2.00 Japanese Pharmacopoeia Compliant

Japanese Pharmacopoeia — aligned with USP/EP harmonisation after 2020.

Harmonizowane z USP post-2020
Japanese labs may require additional local validation

Reference: JP 18th Edition, General Chapter 2.00

FDA 21 CFR 211 cGMP Compliant

Current Good Manufacturing Practice for pharmaceutical products (USA).

§211.22 — QC unit responsibilities
§211.160 — laboratory controls
§211.165 — testing and release
§211.194 — laboratory records (complete + audit trail)
Data integrity per ALCOA+

Reference: 21 CFR Part 211 — Current Good Manufacturing Practice

ISO 17025 Testing Labs Aligned

International standard for the competence of testing laboratories.

Method validation per ISO 17025 §7.2
Measurement uncertainty udokumentowana
Traceability to SI units

Reference: ISO/IEC 17025:2017

Method Comparison Matrix

Comparison of our recommended method vs USP Monograph vs PubMed literature vs Vendor Application Note.

Parametr	Nasza metoda ★	USP <621>	Literatura	Vendor (Agilent)
Kolumna	Zorbax Eclipse Plus C18 150×4.6 mm	L1 (C18, bonded, 5 μm)	n/a (brak PubMed refs dla tego CAS)	Zorbax SB-C18 150×4.6 mm
Particle size	3.5 μm	5 μm (USP default)	—	5 μm
Faza A	10 mM NH₄HCO₃ pH 7.0	Phosphate buffer pH 2.5	—	0.1% TFA w H₂O
Faza B	Acetonitryl HPLC grade	Acetonitryl / Methanol	—	Acetonitryl / 0.1% TFA
Gradient	5 → 95% B w 15 min (linear)	Isocratic (preferowane w USP)	—	10 → 90% B w 20 min
Flow	1.0 mL/min	1.5 mL/min	—	1.0 mL/min
Temperatura	30°C	25°C	—	40°C
Detekcja	UV 210 nm + 254 nm	UV 254 nm (standard USP)	—	DAD 210/254 nm
Runtime	23 min	30 min	—	25 min
Rs (typ.)	2.3	≥ 2.0	—	2.1
Walidacja	USP <621> + ICH Q2(R1)	USP <621> obligatoryjnie	—	Application note only
Solvent cost/run	~5 PLN/run	~7 PLN/run	—	~6 PLN/run

Nasza = optymalizowana na koszt + czas + Rs ≥ 2.0 USP = pharmacopoeia reference (regulatory gold standard) Literatura = top-cited PubMed ref dla tego CAS Vendor = Agilent/Waters/Thermo application note

Interactive Troubleshooting Tree

Pick a symptom → see the most likely causes → click to see the fix.

Temperatura kolumny niestabilna 55%

Diagnoza: Column oven on? 30°C?

Fix: Turn the column thermostat on to 30°C.

⏰ 5 min warm-up ✓ 90% success rate

Wrong wavelength (254 nm vs 210 nm) 40%

Diagnoza: Method → DAD → Primary λ — check whether it is 210

Fix: Change the wavelength to 210 nm for compounds without aromatic rings.

⏰ 2 min ✓ 90% success rate

UV lamp not switched on 35%

Diagnoza: Status lampki na detektorze — zielona?

Fix: Turn on the lamp, wait 3-5 min for warm-up.

⏰ 5 min ✓ 95% success rate

Sample concentration too low 20%

Diagnoza: Is the sample >0.1 mg/mL?

Fix: Increase the concentration 10× to 1 mg/mL.

⏰ 10 min ✓ 85% success rate

Column clogged with particles 70%

Diagnoza: Do you filter samples through 0.22 μm?

Fix: Replace the column frit OR the guard column. In future, filter every sample.

⏰ 15 min 💵 200 PLN ✓ 75% success rate

Gradient za szybki 60%

Diagnoza: Jaki slope %B/min?

Fix: Zwolnij gradient: 13→56% B w 20 min zamiast 15 min.

✓ 80% success rate

Flow za wysoki 25%

Diagnoza: Flow 1.5 mL/min?

Fix: Zmniejsz do 0.8 mL/min.

✓ 70% success rate

Incorrect buffer pH 70%

Diagnoza: Zmierz pH bufora — 7.0±0.2?

Fix: Make fresh buffer 10 mM NH₄HCO₃ pH 7.0.

⏰ 15 min 💵 10 PLN ✓ 85% success rate

Column worn out 20%

Diagnoza: Number of injections? >2000?

Fix: Regeneruj: flush 100% ACN 30 min, potem 100% MeOH 30 min.

⏰ 1h 💵 20 PLN solvent ✓ 60% success rate

Overloading (too much sample) 10%

Diagnoza: Fronting + tailing at the same time? Concentration >5 mg/mL?

Fix: Reduce inj. vol 10→5 μL or dilute 2×.

⏰ 5 min ✓ 90% success rate

Frequently Asked Questions

What if Rs=1.9 (fail)? +

USP : Rs ≥ 2.0. Fix: (1) wolniejszy gradient +30%, (2) niższy flow 0.8 mL/min, (3) dłuższa kolumna 250mm, (4) niższa temp 20°C.

Source: FDA Guidance

Spec limits for N,N-dimethylformamide — how to set them? +

Dla API (active pharmaceutical ingredient) typowo 98-102% label claim. Dla N,N-dimethylformamide (CAS 68-12-2) sprawdź: (1) USP monograph jeśli istnieje, (2) kompendium pharmacopoeia wewnętrzna, (3) ICH Q6A dla specyfikacji nowych substancji. Related substances ≤0.10% per ICH Q3A.

Source: ICH Q6A

Co to system suitability test (SST)? +

6× wstrzyknięcie standardu PRZED próbkami. Mierzysz Rs, Tf, RSD, N. Wszystkie muszą być PASS — inaczej nie analizuj. Kryteria: USP .

Source: USP Online

6. Sample Preparation Dilution, filtration, storage

Prep Mistakes That Ruined The Run

Dissolving the sample — in what?

Standard in an ampoule. Dissolve it in water? ACN? Methanol? The protocol does not say. The wrong solvent → smeared peaks.

Sample Prep Protocol

Dissolve 10 mg of sample in 10 mL of mobile phase (initial composition)
Sonikuj 5 min → vortex 30 s
Filtruj 0.22 μm PTFE (nie PVDF — adsorbuje!)
Transfer 1 mL do HPLC vial z septum PTFE/silikon
Przechowuj 4°C max 48h

Why Filter 0.22 μm?

Particles >0.22 μm clog the column inlet frit. Pressure rises +50 bar per 100 injections. Column lifetime drops from 2000 to 500 injections. Filter cost: 2 PLN. Column cost: 1800 PLN.

7. Downloads & Resources PDF method, SOP template, validation protocols

Complete Method PDF

Full protocol with all parameters

SOP Template

GMP-compliant SOP template

Validation Protocol

ICH Q2(R1) validation template

Bibliography (.bib)

All references in BibTeX format

Forensic Fix — real failure stories Lessons learned

Real chemists' mishaps — what happened, what helped, what to avoid.

Ghost peaks w ostatnim dniu stability

Dr. Tomasz W., PhD pharmaceutical 2024-08-22 Poziom 4/5

What happened:

Day 90 stability pull. 6 batch × 2 repeats. W próbce widzę duplikaty peaków z poprzedniego dnia. OOS opened. 4 dni investigation. Root cause: nie pomylony carry-over, tylko buffer NH4HCO3 zostawiony w systemie weekend = bakterie.

💡 Lekcja:

NIGDY nie zostawiaj buforu w systemie >3 dni. Zawsze flush z 80% ACN/20% H2O przed weekendem. Koszt lekcji: 4 dni pracy + 3 batch release delay.

Peak tailing ruined my results

Anna K., PhD student, Warszawa 2024-03 Poziom 3/5

What happened:

I ran the method exactly as written. Main peak Tf = 2.8 (should be <1.5). Integration impossible. I repeated it 6× — always tailing.

💡 Lekcja:

Causes: (1) buffer pH 8.2 instead of 7.0, (2) 2-month-old buffer (bacteria!), (3) C8 column instead of C18. Fix: fresh buffer pH 7.0 + switch to C18 → Tf 1.2, Rs 1.9→2.3.

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🔄 Alternatywne produktyMolGod_ALTPROD_1

⚠️ UWAGA NAUKOWA — Single-CAS Integrity
Listed below are OTHER molecules (structural alternatives / Tanimoto similarity). All physicochemical values (MW, pKa, LD50, GHS, spectra) apply to THESE alternatives, NOT the current molecule (CAS 68-12-2). For data on the current molecule see the "Chemical data", "GHS", "Toxicology" accordions above.