Procysteine
Also known as: L-2-Oxothiazolidine-4-carboxylic acid, (4R)-2-Oxo-1,3-thiazolidine-4-carboxylic acid, (R)-(−)-2-Oxothiazolidine-4-carboxylic acid, Oxothiazolidinecarboxylic acid, OTC, OTZ, L-2-Thiazolidinone-4-carboxylic acid, (4R)-2-Hydroxy-4,5-dihydro-1,3-thiazole-4-carboxylic acid, MFCD00066092
Procysteine (CAS 19771-63-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H5NO3S and a molecular weight of 147.152 g/mol. Key properties include a melting point of 174 °C (dec.)(lit.) and a density of 1.6±0.1 g/cm3. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 19771-63-2
- Jingsj CID
- J-45551-6
- Molecular Formula
- C4H5NO3S
- Molecular Weight
- 147.152 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 174 °C (dec.)(lit.) |
|---|---|
| Density | 1.6±0.1 g/cm3 |
| Exact Mass | 146.999008 |
| PSA | 91.70000 |
| LogP | -1.11 |
| Refractive Index | 1.595 |
| Storage Conditions | 2-8℃ |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Jeffrey S Otis, et al. Procysteine Stimulates Expression of Key Anabolic Factors and Reduces Plantaris Atrophy in Alcohol-Fed Rats. Alcohol Clin Exp Res. 2009 Aug;33(8):1450-9. |
|---|
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Procysteine?
The CAS number of Procysteine is 19771-63-2.
What are the molecular formula and molecular weight of Procysteine?
Procysteine has molecular formula C4H5NO3S and molecular weight 147.152 g/mol.
Is Procysteine hazardous?
Procysteine has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of Procysteine?
For Procysteine, Upstream Products: L-Cysteine hydrochloride anhydrous, Phenyl chloroformate, L-Cysteine; Downstream Products: (R)-methyl 2-oxothiazolidine-4-carboxylate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Procysteine (CAS 19771-63-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45551-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.