(R)-2-Amino-3-mercaptopropanoic-1-13C Acid; (R)-Cysteine-1-13C; 2-Amino-3-mercaptopropionic-1-13C Acid; Cystein-1-13C; Cysteine-1-13C; E 920-1-13C; Half-cystine-1-13C; L-(+)-Cysteine-1-13C; 3-Mercapto-L-alanine-1-13C; L-Cys-1-13C; NSC 8746-1-13C; Thioserine-1-13C; β-Mercaptoalanine-1-13C

Labelled L-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. L-Cysteine is commonly used as a precursor in the food and pharmaceutical industries. L-Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours.