1-(5-Methyl-2-thienyl)ethanone
Also known as: 2-Acetyl-5-methylthiophene, 1-(5-methylthiophen-2-yl)ethanone, 1-(5-methylthiophen-2-yl)ethan-1-one, 5-Methyl-2-acetylthiophene, Methyl 5-methyl-2-thienyl ketone, Ethanone, 1-(5-methyl-2-thienyl)-, Ketone, methyl 5-methyl-2-thienyl, 1-(5-methyl-2-thienyl)-ethanon, 1-(5-methylthien-2-yl)ethanone
1-(5-Methyl-2-thienyl)ethanone (CAS 13679-74-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H8OS and a molecular weight of 140.203 g/mol. Key properties include a melting point of 24-28 °C(lit.), a boiling point of 234.9±20.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 95.8±21.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 13679-74-8
- Jingsj CID
- J-1031105-4
- Molecular Formula
- C7H8OS
- Molecular Weight
- 140.203 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 24-28 °C(lit.) |
|---|---|
| Boiling Point | 234.9±20.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 95.8±21.8 °C |
| Exact Mass | 140.029587 |
| PSA | 45.31000 |
| LogP | 1.71 |
| Vapor Pressure | 0.1±0.5 mmHg at 25°C |
| Refractive Index | 1.536 |
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 1-(5-Methyl-2-thienyl)ethanone?
The CAS number of 1-(5-Methyl-2-thienyl)ethanone is 13679-74-8.
What are the molecular formula and molecular weight of 1-(5-Methyl-2-thienyl)ethanone?
1-(5-Methyl-2-thienyl)ethanone has molecular formula C7H8OS and molecular weight 140.203 g/mol.
What are the upstream and downstream products of 1-(5-Methyl-2-thienyl)ethanone?
For 1-(5-Methyl-2-thienyl)ethanone, Upstream Products: 2-Methylthiophene, Acetyl chloride; Downstream Products: thiophene-2,5-dicarboxylic acid, 5-Methyl-2-thiophenecarboxylic acid, 2-Ethyl-5-methylthiophene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-(5-Methyl-2-thienyl)ethanone (CAS 13679-74-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1031105-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.