S-Methyl-D-cysteine
Also known as: S-Methyl-D-Cys-OH, D-Cysteine, S-methyl-, D-S-methylcysteine, (2R)-2-Amino-3-(methylthio)propanoic acid
S-Methyl-D-cysteine (CAS 66255-16-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H9NO2S and a molecular weight of 135.18500 g/mol. Key properties include a boiling point of 300.3ºC at 760 mmHg, a density of 1.26g/cm3 and a flash point of 135.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 66255-16-1
- Jingsj CID
- J-1410690-2
- Molecular Formula
- C4H9NO2S
- Molecular Weight
- 135.18500 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 300.3ºC at 760 mmHg |
|---|---|
| Density | 1.26g/cm3 |
| Flash Point | 135.4ºC |
| Exact Mass | 135.03500 |
| PSA | 88.62000 |
| LogP | 0.46160 |
| Refractive Index | 1.539 |
Customs & Trade Information
| HS Code | 2930909090 |
|---|---|
| Summary | 2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of S-Methyl-D-cysteine?
The CAS number of S-Methyl-D-cysteine is 66255-16-1.
What are the molecular formula and molecular weight of S-Methyl-D-cysteine?
S-Methyl-D-cysteine has molecular formula C4H9NO2S and molecular weight 135.18500 g/mol.
What are the upstream and downstream products of S-Methyl-D-cysteine?
For S-Methyl-D-cysteine, Upstream Products: D-Cysteine hydrochloride monohydrate, iodomethane, Methanethiol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "S-Methyl-D-cysteine (CAS 66255-16-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1410690-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.