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-Lysine 是一种化学品，CAS 登记号为 56-87-1。分子式: C6H14N2O2. 摩尔质量: 146.19 g/mol. IUPAC: (2S)-2,6-diaminohexanoic acid.

L-Lysine 的 CAS 号是多少？

L-Lysine 的 CAS 号为 56-87-1——化学文摘社 (CAS) 的唯一标识符。

L-Lysine 的分子式是什么？

分子式: C6H14N2O2. 摩尔质量: 146.19 g/mol. logP (XLogP3): -3. PSA: 89.3 Å².

在哪里可以购买L-Lysine？

L-Lysine 在我们的商店有售。查看产品：https://epchems.online/products/l-lysine/

L-Lysine 的化学数据来自哪里？

L-Lysine 的化学数据来自权威来源：PubChem (NIH), ChEMBL (EBI)。 PubChem CID: 5962. 符合 CLP 法规（EC 1272/2008），依据 CC-BY 4.0 许可提供。

L-Lysine

CAS 56-87-1 · C₆H₁₄N₂O₂ · MW 146.19 g/mol

关于 L-Lysine

L-Lysine 是一种化学品，登记号为 CAS 56-87-1，分子式为 C₆H₁₄N₂O₂，摩尔质量为 146.19 g/mol。

该分子包含 24 个原子，通过 23 个化学键连接。该化合物的完整系统 IUPAC 名称为 (2S)-2,6-diaminohexanoic acid。上方的交互式 3D 模型可查看原子的空间排列——您可以用鼠标旋转、用滚轮缩放，并在骨架 / 球棍 (Ball & Stick) / 空间填充 (Space Fill) 显示模式之间切换。

在理化性质方面，分配系数 logP = -3 (负值，亲水性化合物)，极性表面积 PSA = 89.3 Å²，3 个氢键供体和 4 个氢键受体。这些参数对于评估生物利用度以及与生物分子的相互作用至关重要。

该化合物的化学数据来自 PubChem（NIH NLM NCBI），全球最大的化学数据库之一。所有信息均自动更新，并附有符合 CLP 法规（EC 1272/2008）的 GHS 危险说明翻译。上方的小部件可用于教育、研究和商业用途。

理化性质

Wzór sumaryczny	C₆H₁₄N₂O₂
Masa molowa	146.19 g/mol
IUPAC	(2S)-2,6-diaminohexanoic acid
SMILES	`C(CCN)C[C@@H](C(=O)O)N`
InChIKey	`KDXKERNSBIXSRK-YFKPBYRVSA-N`
logP (XLogP3)	-3
PSA	89.3 Å²
HBD / HBA	3 / 4
PubChem CID	CID 5962 ↗

科学文献

Literatura naukowa

11 artykułów · 8 open access · Źródła: PubMed, OpenAlex, Semantic Scholar

📈 Timeline publikacji (11 artykułów)

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

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Computational and experimental insights into the spectroscopy, electronic states, and molecular docking of (2S)-2,6-diaminohexanoic acid [DAHA].

et al. (2025)

Cytowania: 1Open AccessDOI ↗PubMed ↗PDF ↗

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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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Identification and Cobamide Coenzyme-dependent Formation of 3,5-Diaminohexanoic Acid, an Intermediate in Lysine Fermentation

E E Dekker, H A Barker (1968) · Journal of Biological Chemistry

Cytowania: 26Open AccessDOI ↗PDF ↗

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CYLD-mediated lysine63 deubiquitination regulates synaptic transmission and autophagy to mitigate age-related sequelae.

Sotiriou A, Konstantinidis G, Tavernarakis N (2026) · Nature communications

Open AccessDOI ↗PubMed ↗PDF ↗

Lysine.

(2006)

Review$ PaywallPubMed ↗

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Lysine restriction attenuates obesity-related anxiety-like behaviors via increasing Oscillibacter ruminantium-mediated tryptophol regulation.

Zhao F, Wang J, Liang W et al. (2025) · Microbiome

Open AccessDOI ↗PubMed ↗PDF ↗

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ETV4 lysine 2-hydroxyisobutyrylation promotes intrahepatic cholangiocarcinoma progression by suppressing ferroptosis through TXNIP downregulation.

Wu J, Ma Y, Wang X et al. (2026) · Cancer letters

Open AccessDOI ↗PubMed ↗PDF ↗

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KDM3A catalyses the oxidation of acetyl-lysine to hydroxyacetyl-lysine on histone H3K9.

Belle R, Bukowski JP, Schiller R et al. (2026) · Nature chemistry

Open AccessDOI ↗PubMed ↗PDF ↗

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Lysine malonylation regulates human sperm motility.

Cheng Y, Tian Y, Chen H et al. (2026) · Communications biology

Open AccessDOI ↗PubMed ↗PDF ↗

Lysine (2,6-Diaminohexanoic Acid, H2l)

O. Yamauchi, A. Odani (2016) · IUPAC Standards Online

$ PaywallDOI ↗

ChemInform Abstract: ABSOLUTE CONFIGURATION OF 3,5‐DIAMINOHEXANOIC ACID FROM THE β‐LYSINE MUTASE REACTION

F. KUNZ, J. RETEY, D. ARIGONI et al. (1978) · Chemischer Informationsdienst

$ PaywallDOI ↗

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

同义词

L-lysine · lysine · 56-87-1 · lysine acid · h-Lys-oh · (S)-Lysine · Aminutrin · alpha-Lysine · (S)-2,6-Diaminohexanoic acid · L-lys · Lisina · Lysinum · (S)-alpha,epsilon-Diaminocaproic acid · LYS (IUPAC abbreviation) · L-2,6-Diaminocaproic acid

数据来源

📊 PubChem CID 5962 — NIH
🔬 NIST WebBook — spektroskopia
🌐 Wikidata
💊 ChEMBL — bioaktywność

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