6-Chlorobenzo[b]thiophene

6-氯苯并噻吩

Also known as: 6-Chlorobenzothiophene, 6-chloro-1-benzothiophene, Benzo[b]thiophene, 6-chloro-

6-Chlorobenzo[b]thiophene (CAS 66490-20-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H5ClS and a molecular weight of 168.643 g/mol. It is also known as 6-Chlorobenzothiophene, 6-chloro-1-benzothiophene and Benzo[b]thiophene, 6-chloro-. Key properties include a melting point of 42-43℃, a boiling point of 261.5±13.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 147.6±6.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
66490-20-8
Jingsj CID
J-1502559-7
Molecular Formula
C8H5ClS
Chinese Name
6-氯苯并噻吩
Molecular Weight
168.643 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point42-43℃
Boiling Point261.5±13.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point147.6±6.5 °C

Frequently Asked Questions

What is the CAS number of 6-Chlorobenzo[b]thiophene?

The CAS number of 6-Chlorobenzo[b]thiophene is 66490-20-8.

What are the molecular formula and molecular weight of 6-Chlorobenzo[b]thiophene?

6-Chlorobenzo[b]thiophene has molecular formula C8H5ClS and molecular weight 168.643 g/mol.

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

Last updated:

How to cite: Jingsj. "6-Chlorobenzo[b]thiophene (CAS 66490-20-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1502559-7 (accessed 2026-10-25).

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