R)-2-Amino-3-mercaptopropanoic Acid Hydrochloride; (R)-Cysteine Hydrochloride; 2-Amino-3-mercaptopropionic Acid Hydrochloride; NSC 8746 Hydrochloride; Thioserine Hydrochloride; β-Mercaptoalanine Hydrochloride

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 flavors.