Methyl 3-chlorobenzo[b]thiophene-2-carboxylate

3-氯苯并[b]噻吩-2-羧酸甲酯

Also known as: 3-Chlorobenzo[b]thiophene-2-carboxylic acid methyl ester, Methyl 3-chloro-1-benzothiophene-2-carboxylate, Methyl 3-chlorobenzothiophene-2-carboxylate, MFCD00052503, AKOS AU36-M327, BUTTPARK 96\04-81, METHYL 3-CHLORO-2-BENZO[B]-THIOPHENE CARBOXYLATE, Methyl 3-chlorobenzo(b)thiophene-2-carboxylate

Methyl 3-chlorobenzo[b]thiophene-2-carboxylate (CAS 21211-07-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H7ClO2S and a molecular weight of 226.67900 g/mol. It is also known as 3-Chlorobenzo[b]thiophene-2-carboxylic acid methyl ester, Methyl 3-chloro-1-benzothiophene-2-carboxylate and Methyl 3-chlorobenzothiophene-2-carboxylate. Key properties include a melting point of 80-84 °C(lit.), a boiling point of 338.8ºC at 760 mmHg, a density of 1.391 g/cm3 and a flash point of 158.7ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21211-07-4
Jingsj CID
J-1314848-9
Molecular Formula
C10H7ClO2S
Chinese Name
3-氯苯并[b]噻吩-2-羧酸甲酯
Molecular Weight
226.67900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point80-84 °C(lit.)
Boiling Point338.8ºC at 760 mmHg
Density1.391 g/cm3
Flash Point158.7ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

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

The CAS number of Methyl 3-chlorobenzo[b]thiophene-2-carboxylate is 21211-07-4.

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

Methyl 3-chlorobenzo[b]thiophene-2-carboxylate has molecular formula C10H7ClO2S and molecular weight 226.67900 g/mol.

Is Methyl 3-chlorobenzo[b]thiophene-2-carboxylate hazardous?

Methyl 3-chlorobenzo[b]thiophene-2-carboxylate has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "Methyl 3-chlorobenzo[b]thiophene-2-carboxylate (CAS 21211-07-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1314848-9 (accessed 2026-10-24).

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