1-(1-Benzothiophen-5-yl)-2-bromo-1-ethanone

1-(1-苯并噻吩-5-基)-2-溴-1-乙酮

Also known as: 5-(Bromoacetyl)benzo[b]thiophene, 1-(benzo[b]thiophen-5-yl)-2-bromoethan-1-one, 1-(benzothien-5-yl)-2-bromoethanone, 1-(1-benzothiophen-5-yl)-2-bromoethanone

1-(1-Benzothiophen-5-yl)-2-bromo-1-ethanone (CAS 1131-87-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H7BrOS and a molecular weight of 255.13100 g/mol. It is also known as 5-(Bromoacetyl)benzo[b]thiophene, 1-(benzo[b]thiophen-5-yl)-2-bromoethan-1-one and 1-(benzothien-5-yl)-2-bromoethanone. Key properties include a melting point of 48ºC, a boiling point of 118ºC, a density of 1.617g/cm3 and a flash point of 166.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1131-87-9
Jingsj CID
J-9517-2
Molecular Formula
C10H7BrOS
Chinese Name
1-(1-苯并噻吩-5-基)-2-溴-1-乙酮
Molecular Weight
255.13100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point48ºC
Boiling Point118ºC
Density1.617g/cm3
Flash Point166.7ºC

Frequently Asked Questions

What is the CAS number of 1-(1-Benzothiophen-5-yl)-2-bromo-1-ethanone?

The CAS number of 1-(1-Benzothiophen-5-yl)-2-bromo-1-ethanone is 1131-87-9.

What are the molecular formula and molecular weight of 1-(1-Benzothiophen-5-yl)-2-bromo-1-ethanone?

1-(1-Benzothiophen-5-yl)-2-bromo-1-ethanone has molecular formula C10H7BrOS and molecular weight 255.13100 g/mol.

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

Last updated:

How to cite: Jingsj. "1-(1-Benzothiophen-5-yl)-2-bromo-1-ethanone (CAS 1131-87-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9517-2 (accessed 2026-10-23).

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