Cysteine methyl ester

Cysteine methyl ester
Clinical data
Other names	Methyl L-cysteinate
AHFS/Drugs.com	International Drug Names
Identifiers
	IUPAC name methyl (2R)-2-amino-3-sulfanylpropanoate;
CAS Number	2485-62-3 ;
PubChem CID	29145;
ChemSpider	27113 ;
UNII	RQ6L463N3B;
KEGG	D08164 ;
ChEBI	CHEBI:41531;
ChEMBL	ChEMBL1231844;
CompTox Dashboard (EPA)	DTXSID8048365 ;
ECHA InfoCard	100.017.842
Chemical and physical data
Formula	C4H9NO2S
Molar mass	135.18 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES COC(=O)C(CS)N;
	InChI InChI=1S/C4H9NO2S/c1-7-4(6)3(5)2-8/h3,8H,2,5H2,1H3/t3-/m0/s1 ; Key:MCYHPZGUONZRGO-VKHMYHEASA-N ;

Cysteine methyl ester is the organic compound with the formula HSCH₂CH(NH₂)CO₂CH₃. A white solid, it is the methyl ester of the amino acid cysteine.

Uses

Under the brand name Mecysteine, cysteine methyl ester is a commercial drug with mucolytic activity.^[1] It is used as mucolytic and fluidifying for chronic and acute respiratory disorders. The drug is sold under the commercial names Delta in Paraguay, and Pectite and Zeotin in Japan.^[2]

Cysteine methyl ester is also used as a building block for synthesis of N,S-heterocycles.^[3]^[4]

References

[1]

[2]

[3]

[4]