779539

L -胱氨酸

produced by Wacker Chemie AG, Burghausen, Germany, ≥98.5%

• Synonym(s): (R,R)-3,3′-亚二硫基二(2-丙氨酸)
• Linear Formula: [-SCH₂CH(NH₂)CO₂H]₂
• CAS Number: 56-89-3
• Molecular Weight: 240.30
• Beilstein: 1728094
• EC 号: 200-296-3
• MDL编号: MFCD00064228
• PubChem化学物质编号: 329768048
• NACRES: NA.22

Properties

• 等级: produced by Wacker Chemie AG, Burghausen, Germany
• 检测方案: ≥98.5%
• 形式: powder
• 旋光性: [α]/D -224 to -218°
• reaction suitability: reaction type: solution phase peptide synthesis
• 杂质: ≤0.02% ammonium; ≤0.2% ninhidrin positive substances (each); ≤10 ppm heavy metals
• 灼烧残渣: ≤0.1%
• 缺失: ≤0.2% loss on drying
• mp: >240 °C (dec.) (lit.)
• 痕量阴离子: chloride (Cl^-): ≤200 ppm; sulfate (SO₄^2-): ≤300 ppm
• 痕量阳离子: As: ≤1 ppm; Fe: ≤10 ppm; Pb: ≤5 ppm
• 适用性: clear, colorless for appearance of solution
• SMILES string: N[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O
• InChI: 1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1
• InChI key: LEVWYRKDKASIDU-IMJSIDKUSA-N

Description

一般描述

L-Cystine is an amino acid mainly found in the keratin of hair.

This product is supplied from Wacker FERMOPURE^® material, but is sold for R&D use only, not for drug, household or other uses.

应用

L-Cystine can be used as a starting material for the synthesis of d-biotin, aromatic-bridged cystine cyclic peptides (cystinophanes), chiral imidazolidine disulfides and biodegradable PEGylated gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) L-cystine copolymers.

法律信息

FERMOPURE is a registered trademark of Wacker Chemie AG

Safety Information

• 储存分类代码: 11 - Combustible Solids
• WGK: WGK 1
• 闪点(F): Not applicable
• 闪点(C): Not applicable