243005

L-Cysteine, Free Base

Naturally-occurring non-essential amino acid.

• Synonym(s): L-Cysteine, Free Base, Cys
• Empirical Formula (Hill Notation): C₃H₇NO₂S
• CAS Number: 52-90-4
• Molecular Weight: 121.16
• MDL number: MFCD00064306
• UNSPSC Code: 12352209
• NACRES: NA.54

Properties

• Quality Level: 100
• assay: ≥98% (perchloric acid titration)
• form: solid
• optical activity: [α]20/D +8 to +9°, c = 5 in 1 M HCl
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze
• impurities: ≤100 CFU/g Total microorganisms; ≤24 EU/g Endotoxin
• color: white
• solubility: water: 10 mg/mL; 1 M HCl: 50 mg/mL
• cation traces: Fe: ≤10 ppm; heavy metals (as Pb): ≤0.001%
• shipped in: ambient
• storage temp.: 15-25°C
• InChI: 1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)
• InChI key: XUJNEKJLAYXESH-UHFFFAOYSA-N

Description

General description

Naturally occurring non-essential amino acid.

Naturally-occurring non-essential amino acid.

Packaging

Packaged under inert gas

Warning

Toxicity: Harmful (C)

Reconstitution

Aqueous stock solutions are stable for up to 24 h at -20°C. Acidic stock solutions, when aliquoted and stored at -20°C, are stable for up to 1 month.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable