S-Methyl-L-cysteine
S-甲基-L-半胱氨酸
Also known as: S-Methylcysteine, H-Cys(Me)-OH, (R)-2-Amino-3-(methylmercapto)propionic acid, S-Methyl-(R)-cysteine, 3-(Methylthio)alanine, (2R)-2-Amino-3-(methylsulfanyl)propanoic acid, L-3-(Methylthio)alanine, NSC 15387
- CAS No.
- 1187-84-4
- Jingsj CID
- J-798861-9
- Molecular Formula
- C4H9NO2S
- Chinese Name
- S-甲基-L-半胱氨酸
- Molecular Weight
- 135.185 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
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Request a quotePhysicochemical Properties
| Melting Point | ~240 °C (dec.) |
|---|---|
| Boiling Point | 242.8±30.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 100.7±24.6 °C |
Frequently Asked Questions
What is the CAS number of S-Methyl-L-cysteine?
1187-84-4
What are the molecular formula and molecular weight of S-Methyl-L-cysteine?
C4H9NO2S, molecular weight 135.185 g/mol
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026