Methyl 3-chloro-6-fluorobenzo[b]thiophene-2-carboxylate

3-氯-6-氟苯并[b]噻吩-2-羧酸甲酯

Also known as: 3-Chloro-6-fluorobenzo[b]thiophene-2-carboxylic acid methyl ester, Benzo[b]thiophene-2-carboxylic acid, 3-chloro-6-fluoro-, methyl ester, Methyl 3-chloro-6-fluoro-1-benzothiophene-2-carboxylate, Methyl 3-chloro-6-fluorobenzothiophene-2-carboxylate, 3-Chloro-6-fluoro-2-benzothiophenecarboxylic acid methyl ester

Methyl 3-chloro-6-fluorobenzo[b]thiophene-2-carboxylate (CAS 21211-20-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H6ClFO2S and a molecular weight of 244.67000 g/mol. It is also known as 3-Chloro-6-fluorobenzo[b]thiophene-2-carboxylic acid methyl ester, Benzo[b]thiophene-2-carboxylic acid, 3-chloro-6-fluoro-, methyl ester and Methyl 3-chloro-6-fluoro-1-benzothiophene-2-carboxylate. Key properties include a melting point of 119-123ºC(lit.), a boiling point of 342.3ºC at 760mmHg, a density of 1.464g/cm3 and a flash point of 160.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21211-20-1
Jingsj CID
J-43064-7
Molecular Formula
C10H6ClFO2S
Chinese Name
3-氯-6-氟苯并[b]噻吩-2-羧酸甲酯
Molecular Weight
244.67000 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point119-123ºC(lit.)
Boiling Point342.3ºC at 760mmHg
Density1.464g/cm3
Flash Point160.8ºC

Frequently Asked Questions

What is the CAS number of Methyl 3-chloro-6-fluorobenzo[b]thiophene-2-carboxylate?

The CAS number of Methyl 3-chloro-6-fluorobenzo[b]thiophene-2-carboxylate is 21211-20-1.

What are the molecular formula and molecular weight of Methyl 3-chloro-6-fluorobenzo[b]thiophene-2-carboxylate?

Methyl 3-chloro-6-fluorobenzo[b]thiophene-2-carboxylate has molecular formula C10H6ClFO2S and molecular weight 244.67000 g/mol.

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

Last updated:

How to cite: Jingsj. "Methyl 3-chloro-6-fluorobenzo[b]thiophene-2-carboxylate (CAS 21211-20-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43064-7 (accessed 2026-10-23).

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