S-Phenyl-L-cysteine
Also known as: S-Phenylcysteine, (R)-2-Amino-3-(phenylthio)propanoic acid, 3-(Phenylthio)-L-alanine, 4-Thia-L-homophenylalanine, H-Cys(Phenyl)-OH, beta-phenylcysteine, L-S-phenylcysteine, (R)-S-phenylcysteine, MFCD01318758
S-Phenyl-L-cysteine (CAS 34317-61-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H11NO2S and a molecular weight of 197.25 g/mol. Key properties include a melting point of 200 °C (dec.)(lit.), a boiling point of 361.5±37.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 172.4±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 34317-61-8
- Jingsj CID
- J-45626-8
- Molecular Formula
- C9H11NO2S
- Molecular Weight
- 197.25 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 200 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 361.5±37.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 172.4±26.5 °C |
| Exact Mass | 197.051056 |
| PSA | 88.62000 |
| LogP | 1.86 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.624 |
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-Phenyl-L-cysteine?
The CAS number of S-Phenyl-L-cysteine is 34317-61-8.
What are the molecular formula and molecular weight of S-Phenyl-L-cysteine?
S-Phenyl-L-cysteine has molecular formula C9H11NO2S and molecular weight 197.25 g/mol.
What are the upstream and downstream products of S-Phenyl-L-cysteine?
For S-Phenyl-L-cysteine, Upstream Products: L-Serine, 3-Chloro-L-alanine, L-Cysteine; Downstream Products: S-Phenylmercapturic acid, ch3cho, DL-Alanine.
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-Phenyl-L-cysteine (CAS 34317-61-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45626-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.