2-bromo-1-(3-methyl-1-benzothiophen-2-yl)ethan-1-one

2-溴-1-(3-甲基苯并[b]噻吩-2-基)乙烷-1-酮

Also known as: 2-bromo-1-(3-methylbenzo[b]thiophen-2-yl)ethan-1-one, 2-bromo-1-(3-methyl-1-benzothien-2-yl)ethanone, 2-(bromoacetyl)-3-methylbenzo[b]thiophene, 2-bromoacetyl-3-methylbenzothiophene, 2-bromacetyl-3-methylbenzo<b>thiophen, buttpark 46/04-06, buttpark 154/04-08, MFCD00173793

2-bromo-1-(3-methyl-1-benzothiophen-2-yl)ethan-1-one (CAS 118337-33-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H9BrOS and a molecular weight of 269.15800 g/mol. It is also known as 2-bromo-1-(3-methylbenzo[b]thiophen-2-yl)ethan-1-one, 2-bromo-1-(3-methyl-1-benzothien-2-yl)ethanone and 2-(bromoacetyl)-3-methylbenzo[b]thiophene. Key properties include a melting point of 94-97ºC, a boiling point of 365.2ºC at 760 mmHg, a density of 1.546 g/cm3 and a flash point of 174.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
118337-33-0
Jingsj CID
J-1395930-0
Molecular Formula
C11H9BrOS
Chinese Name
2-溴-1-(3-甲基苯并[b]噻吩-2-基)乙烷-1-酮
Molecular Weight
269.15800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point94-97ºC
Boiling Point365.2ºC at 760 mmHg
Density1.546 g/cm3
Flash Point174.6ºC

Frequently Asked Questions

What is the CAS number of 2-bromo-1-(3-methyl-1-benzothiophen-2-yl)ethan-1-one?

The CAS number of 2-bromo-1-(3-methyl-1-benzothiophen-2-yl)ethan-1-one is 118337-33-0.

What are the molecular formula and molecular weight of 2-bromo-1-(3-methyl-1-benzothiophen-2-yl)ethan-1-one?

2-bromo-1-(3-methyl-1-benzothiophen-2-yl)ethan-1-one has molecular formula C11H9BrOS and molecular weight 269.15800 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-bromo-1-(3-methyl-1-benzothiophen-2-yl)ethan-1-one (CAS 118337-33-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1395930-0 (accessed 2026-10-26).

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