1-(4-methylthiophen-2-yl)ethanone

1-(4-甲基噻吩-2-基)乙酮

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. It is also known as 2-acetyl-4-methylthiophene, 4-methyl-2-acetylthiophene and 1-(4-methyl-2-thienyl)ethanone. 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. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
13679-73-7
Jingsj CID
J-1494118-8
Molecular Formula
C7H8OS
Chinese Name
1-(4-甲基噻吩-2-基)乙酮
Molecular Weight
140.203 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point236.9±20.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point97.1±21.8 °C

GHS Safety & Compliance

IrritantSignal word: Warning

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.

Data compiled from public chemical databases 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-1494118-8 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.