168149

L-Cysteine

97%

• Synonym(s): (R)-2-Amino-3-mercaptopropionic acid
• Linear Formula: HSCH₂CH(NH₂)CO₂H
• CAS Number: 52-90-4
• Molecular Weight: 121.16
• Beilstein: 1721408
• EC Number: 200-158-2
• MDL number: MFCD00064306
• UNSPSC Code: 12352209
• eCl@ss: 32160406
• PubChem Substance ID: 24850236
• NACRES: NA.22

Properties

• Quality Level: 200
• Assay: 97%
• form: solid
• optical activity: [α]20/D +6.5±1.5°, c = 2 in 5 M HCl
• optical purity: ee: 96% (GLC)
• reaction suitability: reaction type: solution phase peptide synthesis
• mp: 240 °C (dec.) (lit.)
• solubility: hydrochloric acid: 5% in 1N, clear, colorless
• application(s): peptide synthesis
• SMILES string: N[C@@H](CS)C(O)=O
• InChI: 1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1
• InChI key: XUJNEKJLAYXESH-REOHCLBHSA-N

Description

General description

L-cysteine is a sulfur-containing non-essential amino acid. Its ability to reduce colitis symptoms is being assessed for potential use in treating inflammatory bowel disease (IBD).

Naturally occurring non-essential amino acid.

Application

L-cysteine can be used as a cysteine source to prepare L-cysteine functionalized gold nanoparticles for use as probes in the colorimetric detection of Hg²⁺ in aqueous solution.

Biochem/physiol Actions

NMDA glutamatergic receptor agonist.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves