Chemical Component Summary

Identifiers S-(carboxymethyl)-L-cysteine
(2R)-2-amino-3-(carboxymethylsulfanyl)propanoic acid
Formula C5 H9 N O4 S
Molecular Weight 179.19 g/mol
Type L-peptide linking
Isomeric SMILES N[C@@H](CSCC(O)=O)C(O)=O
InChI InChI=1S/C5H9NO4S/c6-3(5(9)10)1-11-2-4(7)8/h3H,1-2,6H2,(H,7,8)(H,9,10)/t3-/m0/s1

Chemical Details

Formal Charge 0
Atom Count 20
Chiral Atom Count 1
Chiral Atoms CA
Bond Count 19
Aromatic Bond Count 0
Leaving Atoms OXT H2 HXT

Drug Info: DrugBank

DrugBank ID DB04339   (Stereoisomeric match)
Name Carbocisteine
Groups approved
Description Carbocisteine is a mucolytic that reduces the viscosity of sputum and so can be used to help relieve the symptoms of chronic obstructive pulmonary disorder (COPD) and bronchiectasis by allowing the sufferer to bring up sputum more easily. Carbocisteine should not be used with antitussives (cough suppressants) or medicines that dry up bronchial secretions. Carbocisteine is produced by alkylation of cysteine with chloroacetic acid.
Synonyms S-carboxymethylcysteine
Brand Names
  • Actithiol
  • Lisomucil
  • Muciclar
  • Mucodyne
  • Mucolex
Affected Organism Humans and other mammals
Indication Used to help relieve the symptoms of chronic obstructive pulmonary disorder (COPD) and bronchiectasis.
ATC-Code R05CB03
CAS number 638-23-3

Drug Targets

Name Sequence Search Pharmacological Action Actions
Glutathione S-transferase P Search unknown
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID: 21059682