API reference
L CYSTEINE HCl
- CAS number
- 52-90-4
- Molecular formula
- C3H7NO2S
- Molecular weight
- 121.16 g/mol

About this molecule
Cysteine is a non-essential sulfur-containing amino acid in humans, related to cystine, Cysteine is important for protein synthesis, detoxification, and diverse metabolic functions. Found in beta-keratin, the main protein in nails, skin, and hair, Cysteine is important in collagen production, as well as skin elasticity and texture. Also required in the manufacture of amino acid taurine, Cysteine is a component of the antioxidant glutathione, and plays a role in the metabolism of essential biochemicals such as coenzyme A, heparin, and biotin. (NCI04)
Source: NCI Thesaurus (NCIt), via PubChem.
Identifiers
- IUPAC name
- (2R)-2-amino-3-sulfanylpropanoic acid
- InChIKey
- XUJNEKJLAYXESH-REOHCLBHSA-N
- SMILES
- C([C@@H](C(=O)O)N)S
- Other CAS numbers recorded
- 202114-66-7 · 4371-52-2
- PubChem CID
- 5862
Also known as
L-cysteine · cysteine · Cystein · Thioserine · (R)-2-Amino-3-mercaptopropanoic acid · Half-cystine · L-(+)-Cysteine · L-Cystein
Chemical data on this page is drawn from PubChem (National Library of Medicine) and is provided for identification only. Hanpars does not hold stock of every substance listed; availability, grade, documentation and regulatory status are confirmed per enquiry.
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