1-(4-methylthiophen-2-yl)ethanone
Also known as: 2-acetyl-4-methylthiophene, 4-methyl-2-acetylthiophene, 1-(4-methyl-2-thienyl)ethanone, 1-(4-methyl-2-thienyl)ethan-1-one
1-(4-methylthiophen-2-yl)ethanone (CAS 13679-73-7) 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 boiling point of 236.9±20.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 97.1±21.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 13679-73-7
- Jingsj CID
- J-1494118-5
- 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
| Boiling Point | 236.9±20.0 °C at 760 mmHg |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 97.1±21.8 °C |
| Exact Mass | 140.029587 |
| PSA | 45.31000 |
| LogP | 1.71 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.536 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
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-(4-methylthiophen-2-yl)ethanone?
The CAS number of 1-(4-methylthiophen-2-yl)ethanone is 13679-73-7.
What are the molecular formula and molecular weight of 1-(4-methylthiophen-2-yl)ethanone?
1-(4-methylthiophen-2-yl)ethanone has molecular formula C7H8OS and molecular weight 140.203 g/mol.
Is 1-(4-methylthiophen-2-yl)ethanone hazardous?
1-(4-methylthiophen-2-yl)ethanone has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1-(4-methylthiophen-2-yl)ethanone?
For 1-(4-methylthiophen-2-yl)ethanone, Upstream Products: 3-Methylthiophene, N-Methoxy-N-methylacetamide; Downstream Products: 4-Methylthiophene-2-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. "1-(4-methylthiophen-2-yl)ethanone (CAS 13679-73-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1494118-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.