Does BMA mean n-butyl methacrylate or isobutyl methacrylate?

In most commercial usage the bare abbreviation means the normal isomer, n-butyl methacrylate, CAS 97-88-1. The branched isomer, isobutyl methacrylate, is a different substance with its own identifiers and a different contribution to copolymer hardness, and the tertiary isomer is different again. Because all three are abbreviated loosely in day-to-day correspondence, an order written as BMA alone is ambiguous. Write the full chemical name and the CAS number on every enquiry, purchase order and goods-inwards record.

Why must the monomer not be blanketed with pure nitrogen?

Because the stabiliser used in commercial methacrylate monomers requires dissolved oxygen to function. It intercepts radicals by a mechanism that consumes oxygen, so a drum stripped of oxygen contains an inhibitor that is chemically present and functionally absent. The correct headspace is air, or air diluted with nitrogen to a specified oxygen content, never an inert blanket. This is one of the very few cases in a chemical store where displacing oxygen makes a material more dangerous rather than less, and it catches people whose instinct is trained on flammable solvents.

How should inhibitor content be read on a certificate?

As a starting condition rather than a permanent property. The certificate reports the inhibitor level at release; that level falls in storage as the stabiliser does its job, and it falls faster in warm conditions, in light and in the presence of contamination. A long-stored drum can meet its original certificate on every other line while having very little inhibitor left. Where storage has been long or uncertain, retest the inhibitor level before charging a reactor rather than relying on the release figure.

What is popcorn polymerisation and why does it matter here?

It is a self-propagating, expanding polymer growth that forms in dead legs, vapour spaces, valve bonnets and residues where inhibitor cannot reach. Once seeded it continues under conditions that would not start a normal polymerisation, and it grows mechanically enough to jam valves and distort equipment. The controls are housekeeping controls: no unswept dead legs, no long-standing residues, no lines left full between campaigns, and clean vessels before refilling. It is not a reason to avoid methacrylate monomers, but it is a reason to design the pipework as if the monomer were reactive, because it is.

How does the butyl ester change a copolymer compared with the methyl one?

The four-carbon ester side chain is flexible and bulky, so it loosens chain packing and lowers the temperature at which the polymer softens. Against the methyl ester it gives a softer, more flexible and more extensible polymer, better adhesion and easier film formation, at the cost of hardness and block resistance. Against the corresponding acrylate it gives a harder polymer with the weathering advantage of the methacrylate backbone. Formulators use it as the soft component of an all-methacrylate system, which keeps the durability while tuning flexibility.

Co to jest L (+)-Arginine?

L (+)-Arginine to związek chemiczny zarejestrowany pod numerem CAS 74-79-3. Wzór sumaryczny: C6H14N4O2. Masa molowa: 174.20 g/mol. IUPAC: (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid.

Jaki jest numer CAS L (+)-Arginine?

Numer CAS dla L (+)-Arginine to 74-79-3 — unikalny identyfikator Chemical Abstracts Service (CAS).

Jaki jest wzór sumaryczny L (+)-Arginine?

Wzór sumaryczny: C6H14N4O2. Masa molowa: 174.20 g/mol. logP (XLogP3): -4.2. PSA: 128 Å².

Gdzie można kupić L (+)-Arginine?

L (+)-Arginine jest dostępny w naszym sklepie. Zobacz produkt: https://epchems.online/products/l-arginine/

Skąd pochodzą dane chemiczne dla L (+)-Arginine?

Dane chemiczne dla L (+)-Arginine pochodzą z autorytatywnych źródeł: PubChem (NIH), ChEMBL (EBI). PubChem CID: 6322. Zgodne z Rozporządzeniem CLP (WE 1272/2008), dostępne na licencji CC-BY 4.0.

L (+)-Arginine

L-Arginine

CAS 74-79-3 · C₆H₁₄N₄O₂ · MW 174.20 g/mol

O związku L (+)-Arginine

L (+)-Arginine to związek chemiczny zarejestrowany pod numerem CAS 74-79-3 o wzorze sumarycznym C₆H₁₄N₄O₂ i masie molowej 174.20 g/mol.

Cząsteczka zawiera 26 atomów połączonych 25 wiązaniami chemicznymi. Pełna nazwa systematyczna IUPAC dla tego związku to (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid. Powyższy interaktywny model 3D pozwala obejrzeć układ przestrzenny atomów — można go obracać myszką, powiększać scrollem oraz przełączać między trybami wizualizacji szkieletowy / Ball & Stick / Space Fill.

Pod względem właściwości fizykochemicznych współczynnik podziału logP = -4.2 (wartość ujemna, związek hydrofilowy), powierzchnia polarna PSA = 128 Å², 4 donorów i 4 akceptorów wiązań wodorowych. Te parametry są kluczowe przy ocenie biodostępności i interakcji z biomolekułami.

Dane chemiczne dla tego związku pochodzą z PubChem (NIH NLM NCBI), jednej z największych baz związków chemicznych na świecie. Wszystkie informacje są aktualizowane automatycznie i wzbogacone o tłumaczenia zwrotów GHS zgodne z Rozporządzeniem CLP (1272/2008/WE). Powyższy widget można używać do celów edukacyjnych, badawczych i komercyjnych.

Właściwości fizykochemiczne

Wzór sumaryczny	C₆H₁₄N₄O₂
Masa molowa	174.20 g/mol
IUPAC	(2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid
SMILES	`C(C[C@@H](C(=O)O)N)CN=C(N)N`
InChIKey	`ODKSFYDXXFIFQN-BYPYZUCNSA-N`
logP (XLogP3)	-4.2
PSA	128 Å²
HBD / HBA	4 / 4
PubChem CID	CID 6322 ↗

Bezpieczeństwo GHS

Sygnał: Uwaga

GHS07

Literatura naukowa

20 artykułów · 12 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (20 artykułów)

Wysokość słupka = liczba artykułów w roku. Hover dla szczegółów.

A comparison of the anticonvulsant potency of (±) 2-amino-5-phosphono-pentanoic acid and (±) 2-amino-7-phosphonoheptanoic acid

B.S. Meldrum, M.J. Croucher, S.J. Czuczwar et al. (1983) · Neuroscience

Cytowania: 81$ PaywallDOI ↗

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Synthesis and Pharmacology of the Baclofen Homologues 5-Amino-4-(4-chlorophenyl)pentanoic Acid and the<i>R</i>- and<i>S</i>-Enantiomers of 5-Amino-3-(4-chlorophenyl)pentanoic Acid

Rolf Karla, Bjarke Ebert, Christian Thorkildsen et al. (1999) · Journal of Medicinal Chemistry

Cytowania: 23Open AccessDOI ↗PDF ↗

Stereoselective synthesis of (2s,3s,4r)-4-amino-3-hydroxy-2-methyl-pentanoic acid, an amino acid constituent of bleomycin, by aldold condensation)

Masatoshi Narita, Masami Otsuka, Susumu Kobayashi et al. (1982) · Tetrahedron Letters

Cytowania: 29$ PaywallDOI ↗

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PRMT3-mediated FOXO1 arginine methylation exacerbates oxidative stress-induced decidualization defects in the eutopic endometrium of endometriosis.

Sun F, Chen Y, Li Y et al. (2025) · Cellular and molecular life sciences : CMLS

Open AccessDOI ↗PubMed ↗PDF ↗

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Monocyte infiltration induces CNS arginine catabolism to fuel neuroinflammation.

Kerndl M, Musiejovsky L, Komljenovic A et al. (2026) · Nature immunology

Open AccessDOI ↗PubMed ↗PDF ↗

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Protein tyrosine kinase-6 is post-translationally regulated by arginine methylation and ubiquitination.

Jiang L, Gilic MB, Vlajic K et al. (2026) · Cell death & disease

Open AccessDOI ↗PubMed ↗PDF ↗

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Targeting arginine metabolism reverses bone immunosuppressive microenvironment and metastasis in ARID1A-deficient triple negative breast cancer.

Pan S, Wang J, Wang B et al. (2026) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

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PRMT5 in mitochondria regulates mtDNA stability through TFAM arginine methylation.

Bhattacharjee S, Das S, Chowdhury B et al. (2026) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

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SNHG18 deficiency reprograms arginine metabolism to foster an immunosuppressive microenvironment in prostate cancer bone metastasis.

Xie Z, Li S, Yang J et al. (2026) · Cancer letters

Open AccessDOI ↗PubMed ↗PDF ↗

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Arginine methylation of human DNA topoisomerase I by PRMT5 facilitates DNA relaxation.

Basu S, Bhattacharyya A, Khan MA et al. (2026) · Nucleic acids research

Open AccessDOI ↗PubMed ↗PDF ↗

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Arginine Methylation Antagonizes TEAD3-Mediated Repression to Promote Osteogenic Differentiation by Disrupting RUNX2-Sequestrating Condensates.

Cao L, Han R, Xiong H et al. (2026) · Advanced science (Weinheim, Baden-Wurttemberg, Germany)

Open AccessDOI ↗PubMed ↗PDF ↗

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PRMT1-mediated asymmetric dimethylation of arginine residue 602 in DDX1 promotes cholangiocarcinoma progression.

Liu W, Liao Y, Kuai Y et al. (2026) · Clinical and molecular hepatology

Open AccessDOI ↗PubMed ↗PDF ↗

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ACOD1 regulates microglial arginine metabolism and inflammatory responses.

Karadima E, Yilmaz C, Sinha A et al. (2026) · Frontiers in immunology

Open AccessDOI ↗PubMed ↗PDF ↗

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SimpleDesign: A Joint Model for Protein Sequence and Structure Codesign

Jiarui Lu, Yuyang Wang, Yizhe Zhang et al. (2026) · arXiv (2609.03377v1)

Open AccessPDF ↗

Gut Microbiota Mediates HFPO-DA-Induced Hepatotoxicity via Arginine Reprogramming in Lean NAFLD Mice.

Ding R, He L, Guo R et al. (2026) · Environmental science & technology

$ PaywallDOI ↗PubMed ↗

Enantioselective Synthesis of Fmoc-Protected (2S,3R)-3,4-Dimethyl-2-(methylamino)pentanoic Acid

Thomas Nittoli, Po-Cheng Yu, Nurul Ansari et al. (2025) · Synlett

$ PaywallDOI ↗

Crystal structure of leukotriene A4 hydrolase in complex with (2S)-2-amino-5-[[4-[(2S)-2-hydroxy-2-phenyl-ethoxy]phenyl]amino]-5-oxo-pentanoic acid

M.M.G.M. Thunnissen, M. Adler, M. Whitlow (2008) · Worldwide Protein Data Bank

$ PaywallDOI ↗

Structure of rat neuronal nitric oxide synthase heme domain in complex with (2S)-2-Amino-5-(2-(methylsulfinyl)acetimidamido) pentanoic acid

H. Li, T.L. Poulos (2015) · Worldwide Protein Data Bank

$ PaywallDOI ↗

Crystal structure of the polysaccharide deacetylase Bc1974 from Bacillus cereus in complex with (2S)-2-amino-5-(diaminomethylideneamino)-N-hydroxypentanamide

P. Giastas, A. Andreou, E.E. Eliopoulos (2018)

$ PaywallDOI ↗

Crystal structure of ((2S)-5-amino-2-((1-n-propyl-1H-imidazol-4-yl) methyl)pentanoic acid) UK396,082 a TAFIa inhibitor, Bound to Activated Porcine Pancreatic carboxypeptidaseB

D.G. Brown, R.S. Moore (2007) · Worldwide Protein Data Bank

$ PaywallDOI ↗

Dane z PubMed (NIH NLM), OpenAlex (CC0), Semantic Scholar (AI2). AI Summary wygenerowane przez Semantic Scholar TLDR. Artykuły z ikoną wymagają płatnego dostępu.

Synonimy

L-arginine · arginine · 74-79-3 · L-(+)-Arginine · (S)-2-Amino-5-guanidinopentanoic acid · L-Arg · Arginina · ARGININE, L- · Argininum · L-alpha-Amino-delta-guanidinovaleric acid · L-Arginin · 2-amino-5-guanidinovaleric acid · (2S)-2-amino-5-carbamimidamidopentanoic acid · (S)-2-Amino-5-((aminoiminomethyl)amino)pentanoic acid · (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid

Data sources

📊 PubChem CID 6322 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Kup w sklepie

L (+)-Arginine →

Powiązane molekuły

Diethylene Glycol Monoethyl Ether CAS 111-90-0 · C6H14O3 Tripropylene glycol CAS 24800-44-0 · C9H20O4 N-Butanol CAS 71-36-3 · C4H10O Cyclohexanol CAS 108-93-0 · C6H12O Butyl glycol CAS 111-76-2 · C6H14O2 Dimethyl Sulfoxide CAS 67-68-5 · C2H6OS