Cysteine contains of thiol group, when thiol group is under oxidation, the pair of cysteine forming cystine, L-cysteine is one of 20 standard amino acids, it is non essential amino acid.

Molecular Weight: 121.16

Molecular Formula: C3H7NO2S

IUPAC Name: 2R)-2-amino-3-sulfanyl-propanoic acid

CAS Name: L-Cysteine

CAS number: 52-90.4

One Letter Code: C

Three Letter Code: Cys

Cysteine

Structural Formula

3D Structural Formula

L-cysteine - structural formulaL-aspartic acid 3 D structure

Nutritional Phytochemical Analytical Laboratory