Molecular Identity
L-cysteine
(2R)-2-amino-3-sulfanylpropanoic acid
PubChem CID: 5862
L-cysteine is an optically active form of cysteine having L-configuration. It has a role as a flour treatment agent, an EC 4.3.1.3 (histidine ammonia-lyase) inhibitor and a human metabolite. It is a cysteine, a L-alpha-amino acid, a serine family amino acid and a proteinogenic amino acid. It is a conjugate base of a L-cysteinium. It is a conjugate acid of a L-cysteinate(1-). It is an enantiomer of a D-cysteine. It is a tautomer of a L-cysteine zwitterion.
2D Structure
Properties
C3H7NO2S
Molecular Formula
121.16
Molecular Weight
g/mol
121.0197
Exact Mass
Da
-2.5
XLogP
Drug-like (Lipinski: < 5)
64.3
TPSA
Good oral absorption (< 140 A²)
3
H-Bond Donors
4
H-Bond Acceptors
75
Complexity
SMILES
Canonical SMILES
SMILES: Synonyms(20)
L-cysteinecysteine52-90-4Cystein(R)-2-Amino-3-mercaptopropanoic acidThioserineHalf-cystineL-(+)-CysteineL-Cysteinbeta-Mercaptoalanine(2R)-2-amino-3-sulfanylpropanoic acidCysteinumL-CyscisteinaFREE CYSTEINE
Data from PubChem (NCBI)
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Drug Network
Trials and conditions connected to L-cysteine
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