C4H10ClNO2S
171.65 g/mol
Pharmaceutical IntermediateWarning
L-CYSTEINE METHYL ESTER HYDROCHLORIDE
CAS18598-63-5EC242-435-0
Category
Pharmaceutical Intermediate
Compound Class
Ester
Primary Use
Pharmaceutical Intermediate
L-Cysteine methyl ester hydrochloride is a salt form of the methyl ester derivative of the amino acid cysteine. It serves as a pharmaceutical raw material, primarily utilized in the synthesis of peptide-based compounds and other active pharmaceutical ingredients due to its reactive thiol group.
pharmaceutical manufacturing intermediatereagent in peptide synthesis research
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
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ReferenceSame Category
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Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for L-CYSTEINE METHYL ESTER HYDROCHLORIDE (CAS 18598-63-5) is 2930.90.
HS code (international, 6-digit)
2930.90
EU CN code (8-digit)
2930 90 16
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
methyl (2R)-2-amino-3-sulfanylpropanoate;hydrochloride
InChIKey
WHOHXJZQBJXAKL-DFWYDOINSA-N
SMILES
COC(=O)[C@H](CS)N.Cl
Synonyms (28)
- Acdrile
- Actiol
- H-Cys-OMe.HCl
- L-CYSTEINE METHYL ESTER HCl
- L-Cys-OMe hydrochloride
- L-Cys-OMe.HCl
- Mecysteine hydrochloride
- Visclair (TN)
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