1-Benzothiophene-5-carbonyl chloride

1-苯并噻吩-5-羰酰氯

Also known as: Benzo[b]thiophene-5-carbonyl chloride, 1-Benzothiophene-5-carbonylchloride, Benzo[b]thiophene-5-carbonylchloride, 5-Chlorformyl-thionaphthen, 1-BENZOTHIOPHENE-5-CARBONYL CHLORIDE

1-Benzothiophene-5-carbonyl chloride (CAS 1128-89-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H5ClOS and a molecular weight of 196.65300 g/mol. It is also known as Benzo[b]thiophene-5-carbonyl chloride, 1-Benzothiophene-5-carbonylchloride and Benzo[b]thiophene-5-carbonylchloride. Key properties include a melting point of 86ºC, a boiling point of 309.5ºC at 760mmHg, a density of 1.41g/cm3 and a flash point of 141ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1128-89-8
Jingsj CID
J-45113-4
Molecular Formula
C9H5ClOS
Chinese Name
1-苯并噻吩-5-羰酰氯
Molecular Weight
196.65300 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point86ºC
Boiling Point309.5ºC at 760mmHg
Density1.41g/cm3
Flash Point141ºC

Frequently Asked Questions

What is the CAS number of 1-Benzothiophene-5-carbonyl chloride?

The CAS number of 1-Benzothiophene-5-carbonyl chloride is 1128-89-8.

What are the molecular formula and molecular weight of 1-Benzothiophene-5-carbonyl chloride?

1-Benzothiophene-5-carbonyl chloride has molecular formula C9H5ClOS and molecular weight 196.65300 g/mol.

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

Last updated:

How to cite: Jingsj. "1-Benzothiophene-5-carbonyl chloride (CAS 1128-89-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45113-4 (accessed 2026-10-23).

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