1-(5-Methyl-2-thienyl)propan-1-one

5-丙酰基-2-甲基噻吩

Also known as: 2-Methyl-5-propionylthiophene, 1-(5-methylthiophen-2-yl)propan-1-one, 1-(5-methyl-2-thienyl)-1-propanone, 5-methyl-2-propanoylthiophene, 5-methyl-2-thiophenyl ethyl ketone

1-(5-Methyl-2-thienyl)propan-1-one (CAS 59303-13-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H10OS and a molecular weight of 154.22900 g/mol. It is also known as 2-Methyl-5-propionylthiophene, 1-(5-methylthiophen-2-yl)propan-1-one and 1-(5-methyl-2-thienyl)-1-propanone. Key properties include a boiling point of 251.1ºC at 760 mmHg, a density of 1.076g/cm3 and a flash point of 105.7ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
59303-13-8
Jingsj CID
J-1101573-8
Molecular Formula
C8H10OS
Chinese Name
5-丙酰基-2-甲基噻吩
Molecular Weight
154.22900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point251.1ºC at 760 mmHg
Density1.076g/cm3
Flash Point105.7ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1-(5-Methyl-2-thienyl)propan-1-one?

The CAS number of 1-(5-Methyl-2-thienyl)propan-1-one is 59303-13-8.

What are the molecular formula and molecular weight of 1-(5-Methyl-2-thienyl)propan-1-one?

1-(5-Methyl-2-thienyl)propan-1-one has molecular formula C8H10OS and molecular weight 154.22900 g/mol.

Is 1-(5-Methyl-2-thienyl)propan-1-one hazardous?

1-(5-Methyl-2-thienyl)propan-1-one 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-(5-Methyl-2-thienyl)propan-1-one (CAS 59303-13-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1101573-8 (accessed 2026-10-22).

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