Cystine

C₆H₁₂N₂O₄S₂CAS 56-89-3240.29 g/mol

Open in Covalent MOL file

Carboxylic acid Disulfide Primary amine

Properties

Molecular formula: C₆H₁₂N₂O₄S₂
Molar mass: 240.29 g/mol
Exact mass: 240.0238 Da
Density: 1.68 g/mL
Melting point: 260.5 °C (decomposes)
logP: -0.81Crippen estimate
Polar surface area: 126.6 Å²
H-bond donors / acceptors: 4 / 6
Rotatable bonds: 7
Stereocentres: R, Rin SMILES atom order

Identifiers

CAS number

56-89-3

SMILES

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

InChIKey

LEVWYRKDKASIDU-IMJSIDKUSA-N

InChI

InChI=1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1

Weigh it out

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

Names and synonyms

17 names · show all

L-Cystine
Cystine, L-
Bis(β-amino-β-carboxyethyl) disulfide
Cystine acid
β,β′-Diamino-β,β′-dicarboxydiethyl disulfide
Dicysteine
3,3′-Dithiobis(2-aminopropanoic acid)
β,β′-Dithiodialanine
L-Cysteine disulfide
Propanoic acid, 3,3′-dithiobis[2-amino-, [R-(R*,R*)]-
(-)-Cystine
L-Cystin
L-(-)-Cystine
Oxidized L-cysteine
[R-(R*,R*)]-3,3′-Dithiobis[2-aminopropanoic acid]
L-Alanine, 3,3′-dithiobis-
NSC 13203

Reactions

l-Cystineproduct

Work with Cystine

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

Cystine dihydrochloride30925-07-688 % similar L-Cystine, hydrochloride (1:?)34760-60-688 % similar Dl-lanthionine3183-08-275 % similar Djenkolic acid498-59-969 % similar S-Methylcysteine1187-84-467 % similar 3-[(1,1-Dimethylethyl)dithio]-L-alanine30044-51-067 % similar Homocystine462-10-263 % similar Homocystine626-72-263 % similar

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

Same formula

D-Cystine349-46-2 Cystine923-32-0

Elsewhere

PubChem CAS Common Chemistry NIST WebBook Wikipedia