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.

L-Serine è un composto chimico registrato con il numero CAS 56-45-1. Formula bruta: C3H7NO3. Massa molare: 105.09 g/mol. IUPAC: (2S)-2-amino-3-hydroxypropanoic acid.

Qual è il numero CAS di L-Serine?

Il numero CAS di L-Serine è 56-45-1 — un identificativo univoco del Chemical Abstracts Service (CAS).

Qual è la formula bruta di L-Serine?

Formula bruta: C3H7NO3. Massa molare: 105.09 g/mol. logP (XLogP3): -3.1. PSA: 83.6 Å².

Dove acquistare L-Serine?

L-Serine è disponibile nel nostro negozio. Vedi il prodotto: https://epchems.online/products/l-serine/

Da dove provengono i dati chimici di L-Serine?

I dati chimici di L-Serine provengono da fonti autorevoli: PubChem (NIH), ChEMBL (EBI). PubChem CID: 5951. Conformi al Regolamento CLP (CE 1272/2008), disponibili con licenza CC-BY 4.0.

L-Serine

CAS 56-45-1 · C₃H₇NO₃ · MW 105.09 g/mol

Informazioni su L-Serine

L-Serine è un composto chimico registrato con il numero CAS 56-45-1, con formula bruta C₃H₇NO₃, e massa molare di 105.09 g/mol.

La molecola contiene 14 atomi collegati da 13 legami chimici. Il nome sistematico IUPAC completo di questo composto è (2S)-2-amino-3-hydroxypropanoic acid. Il modello 3D interattivo qui sopra permette di visualizzare la disposizione spaziale degli atomi — puoi ruotarlo con il mouse, zoomare con la rotellina e passare tra le modalità di visualizzazione scheletro / Ball & Stick / Space Fill.

Dal punto di vista delle proprietà chimico-fisiche, il coefficiente di ripartizione logP = -3.1 (valore negativo, composto idrofilo), superficie polare PSA = 83.6 Å², 3 donatori e 4 accettori di legami a idrogeno. Questi parametri sono fondamentali per valutare la biodisponibilità e l'interazione con le biomolecole.

I dati chimici di questo composto provengono da PubChem (NIH NLM NCBI), uno dei più grandi database chimici al mondo. Tutte le informazioni sono aggiornate automaticamente e arricchite con le traduzioni delle indicazioni di pericolo GHS conformi al Regolamento CLP (CE 1272/2008). Il widget qui sopra può essere utilizzato per scopi educativi, di ricerca e commerciali.

Proprietà chimico-fisiche

Wzór sumaryczny	C₃H₇NO₃
Masa molowa	105.09 g/mol
IUPAC	(2S)-2-amino-3-hydroxypropanoic acid
SMILES	`C([C@@H](C(=O)O)N)O`
InChIKey	`MTCFGRXMJLQNBG-REOHCLBHSA-N`
logP (XLogP3)	-3.1
PSA	83.6 Å²
HBD / HBA	3 / 4
PubChem CID	CID 5951 ↗

Letteratura scientifica

Literatura naukowa

11 artykułów · 11 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (11 artykułów)

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

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Heat Capacities of L-Cysteine, L-Serine, L-Threonine, L-Lysine, and L-Methionine

Václav Pokorný, Vojtěch Štejfa, Jakub Havlín et al. (2023) · Molecules

Open AccessDOI ↗PDF ↗

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m(3)C32 tRNA modification controls serine codon-biased mRNA translation, cell cycle, and DNA-damage response.

Cui J, Sendinc E, Liu Q et al. (2024) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

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N6-Methyladenosine modification activates the serine synthesis pathway to mediate therapeutic resistance in liver cancer.

Chan FF, Kwan KK, Seoung DH et al. (2024) · Molecular therapy : the journal of the American Society of Gene Therapy

Open AccessDOI ↗PubMed ↗PDF ↗

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Lactylation-Driven IGF2BP3-Mediated Serine Metabolism Reprogramming and RNA m6A-Modification Promotes Lenvatinib Resistance in HCC.

Lu Y, Zhu J, Zhang Y et al. (2024) · Advanced science (Weinheim, Baden-Wurttemberg, Germany)

Open AccessDOI ↗PubMed ↗PDF ↗

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Dual impacts of serine/glycine-free diet in enhancing antitumor immunity and promoting evasion via PD-L1 lactylation.

Tong H, Jiang Z, Song L et al. (2024) · Cell metabolism

Open AccessDOI ↗PubMed ↗PDF ↗

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Phosphorylation of H3.3 at Serine 31 acts as a switch of nucleosome dynamics for transcription.

Ma J, Zhang J, Xiao X et al. (2025) · Nucleic acids research

Open AccessDOI ↗PubMed ↗PDF ↗

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Respiration defects limit serine synthesis required for lung cancer growth and survival.

Cararo Lopes E, Shi F, Sawant A et al. (2025) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

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Nucleotidyltransferase toxin MenT extends aminoacyl acceptor ends of serine tRNAs to control Mycobacterium tuberculosis growth.

Xu X, Barriot R, Voisin B et al. (2024) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

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Comprehensive analysis of peripheral blood free amino acids in MASLD: the impact of glycine-serine-threonine metabolism.

Mino M, Kakazu E, Sano A et al. (2024) · Amino acids

Open AccessDOI ↗PubMed ↗PDF ↗

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ZNF526 drives tumor growth by enhancing SHMT1-dependent serine metabolism and antioxidant capability in TNBC.

Qin W, Shao L, Li Q et al. (2025) · Molecular cancer

Open AccessDOI ↗PubMed ↗PDF ↗

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USP30 senses serine/glycine levels to regulate serine biosynthesis and colorectal tumorigenesis by deubiquitinating FTO.

Qiao Y, Wang C, Liu H et al. (2026) · Cell death and differentiation

Open AccessDOI ↗PubMed ↗PDF ↗

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

Sinonimi

L-serine · serine · 56-45-1 · (S)-2-Amino-3-hydroxypropanoic acid · (S)-Serine · beta-Hydroxyalanine · L-(-)-Serine · L-ser · (2S)-2-amino-3-hydroxypropanoic acid · Serina · L-Serin · SER (IUPAC abbrev) · Serinum · alpha-Amino-beta-hydroxypropionic acid · Serene

Fonti dei dati

📊 PubChem CID 5951 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

Acquista nel negozio

L-Serine →

Molecole correlate

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