Cysteine

C₃H₇NO₂SCAS 52-90-4121.15 g/mol

Open in Covalent MOL file

Carboxylic acid Primary amine Thiol

Properties

Molecular formula: C₃H₇NO₂S
Molar mass: 121.15 g/mol
Exact mass: 121.0197 Da
Density: 1.6666 g/mL (at 45 °C)
Melting point: 240 °C (decomposes)
logP: -0.67Crippen estimate
Polar surface area: 63.3 Å²
H-bond donors / acceptors: 3 / 3
Rotatable bonds: 2
Stereocentres: Rin SMILES atom order

Identifiers

CAS number

52-90-4

SMILES

N[C@@H](CS)C(=O)O

InChIKey

XUJNEKJLAYXESH-REOHCLBHSA-N

InChI

InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1

Weigh it out

Type any one amount. The others follow from the molar mass and density.

Names and synonyms

19 names · show all

L-Cysteine
Cysteine, L-
Half-cystine
β-Mercaptoalanine
Thioserine
L-(+)-Cysteine
Propanoic acid, 2-amino-3-mercapto-, (R)-
Cystein
L-Alanine, 3-mercapto-
NSC 8746
(R)-2-Amino-3-mercaptopropanoic acid
(R)-Cysteine
2-Amino-3-mercaptopropionic acid
L-Cys
E 920
(R)-2-Amino-3-sulfanylpropanoic acid
(2R)-2-Amino-3-sulfanylpropanoic acid
2-Amino-3-mercaptopropanoic acid
11: PN: WO2021055880 SEQID: 12 claimed protein

Work with Cysteine

Predict the NMR spectrum1H and 13C shifts with multiplicities Make a solutionWhat to weigh for any molarity and volume Check drug-likenessLipinski, Veber and lead-likeness Isotope patternExact mass and the mass spectrum pattern

Similar compounds

(±)-Cysteine hydrochloride10318-18-088 % similar (S)-2-Amino-3-mercaptopropanoic acid hydrochloride32443-99-588 % similar L-(+)-Cysteine hydrochloride52-89-188 % similar Dl-cysteine hydrochloride monohydrate116797-51-478 % similar Cysteine hydrochloride monohydrate7048-04-678 % similar Homocysteine454-29-563 % similar L-Homocysteine6027-13-063 % similar D-Serine312-84-558 % similar

Tanimoto similarity of circular fingerprints over the whole catalogue. All similar compounds

Same formula

Cyclopropanesulfonamide154350-29-5 Cysteine3374-22-9 D-Cysteine921-01-7

Elsewhere

PubChem CAS Common Chemistry NIST WebBook Wikipedia