5-ethyl-4-methylthiazole
Also known as: 4-methyl-5-ethylthiazole, 5-ethyl-4-methyl-1,3-thiazole, 4-methyl-5-ethyl-1,3-thiazole, 5-ethyl-4-methyl-1,3-thiazole, thiazole, 5-ethyl-4-methyl-, 5-aethyl-4-methyl-thiazol, unii-4m216hr018, einecs 250-852-4
5-ethyl-4-methylthiazole (CAS 31883-01-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H9NS and a molecular weight of 127.207 g/mol. Key properties include a boiling point of 181.3±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 68.1±6.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 31883-01-9
- Jingsj CID
- J-1499121-0
- Molecular Formula
- C6H9NS
- Molecular Weight
- 127.207 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 181.3±9.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 68.1±6.8 °C |
| Exact Mass | 127.045570 |
| PSA | 41.13000 |
| LogP | 1.89 |
| Vapor Pressure | 1.2±0.3 mmHg at 25°C |
| Refractive Index | 1.524 |
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 5-ethyl-4-methylthiazole?
The CAS number of 5-ethyl-4-methylthiazole is 31883-01-9.
What are the molecular formula and molecular weight of 5-ethyl-4-methylthiazole?
5-ethyl-4-methylthiazole has molecular formula C6H9NS and molecular weight 127.207 g/mol.
What are the upstream and downstream products of 5-ethyl-4-methylthiazole?
For 5-ethyl-4-methylthiazole, Upstream Products: 4-Methyl-5-vinylthiazole, 2-Pentanone, Thioformamide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-ethyl-4-methylthiazole (CAS 31883-01-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1499121-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.