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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 24417Generated: October 23, 2026

(-)-S-Methyl-L-cysteine

https://huagongshe.com/en/chemical/24417

(-)-S-Methyl-L-cysteine molecular structure

Identifiers & Physical Properties

CAS No.1187-84-4
Molecular formulaC4H9NO2S
Average molar mass135.19 g/mol
Monoisotopic mass135.03539953 g/mol
SMILESCSC[C@H](N)C(=O)O
InChIKeyIDIDJDIHTAOVLG-VKHMYHEASA-N
PubChem CID24417
ChEMBLCHEMBL394875
ChEBICHEBI:45658
EC No.214-701-6
DTXSIDDTXSID50862579

Chemical & Physical Properties

XLogP-2.7
Topological polar surface area88.6
Hydrogen bond donors2
Hydrogen bond acceptors4
Rotatable bonds3
Heavy atoms8
Formal charge0
Complexity86.1
Chemical classesBiological Agents -> Amino Acids and Derivatives
DrugsPharmaceuticals -> Listed in ZINC15
Physical DescriptionBeige powder[Sigma-Aldrich MSDS]

Safety & Regulations

GHS classificationWarningH302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.
Hazards summaryNot considered hazardous by GHS classification[Sigma-Aldrich MSDS]
Hazard Classes and CategoriesAcute Tox. 4 (100%)