4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid
Also known as: 2,3-Dihydro-4-methyl-2-thioxo-5-thiazolecarboxylic acid, 2-Mercapto-4-methyl-5-thiazolecarboxylic acid, 4-Methyl-2-thioxo-2,3-dihydrothiazole-5-carboxylic acid, 4-Methyl-2-sulfanylidene-3H-1,3-thiazole-5-carboxylic acid, 5-Thiazolecarboxylic acid, 2,3-dihydro-4-methyl-2-thioxo-, 4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid
4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid (CAS 57658-34-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5NO2S2 and a molecular weight of 175.229 g/mol. Key properties include a boiling point of 309.3±52.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 140.8±30.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 57658-34-1
- Jingsj CID
- J-1491297-1
- Molecular Formula
- C5H5NO2S2
- Molecular Weight
- 175.229 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 309.3±52.0 °C at 760 mmHg |
|---|---|
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 140.8±30.7 °C |
| Exact Mass | 174.976166 |
| PSA | 117.23000 |
| LogP | 1.26 |
| Vapor Pressure | 0.0±1.4 mmHg at 25°C |
| Refractive Index | 1.730 |
Customs & Trade Information
| HS Code | 2934100090 |
|---|---|
| Summary | 2934100090 other compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid?
The CAS number of 4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid is 57658-34-1.
What are the molecular formula and molecular weight of 4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid?
4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid has molecular formula C5H5NO2S2 and molecular weight 175.229 g/mol.
What are the upstream and downstream products of 4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid?
For 4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid, Upstream Products: ethyl 4-methyl-2-sulfanylidene-3H-1,3-thiazole-5-carboxylate; Downstream Products: 4-Methylthiazole-5-carboxylic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Methyl-2-thioxo-2,3-dihydro-1,3-thiazole-5-carboxylic acid (CAS 57658-34-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1491297-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.