4-Chlorobenzo[b]thiophene-2-carboxylic acid

4-氯苯并[b]噻吩-2-羧酸

Also known as: 4-Chloro-1-benzothiophene-2-carboxylic acid, 4-Chlorobenzothiophene-2-carboxylic acid, 4-chloro-2-benzo[b]thiophenecarboxylic acid, 4-chloro-2-benzothiophenecarboxylic acid, 2-carboxy-4-chlorobenzo[b]thiophene, Brexpiprazole Impurity 28, FMX14276-A3, IFLAB-BB F2124-0584

4-Chlorobenzo[b]thiophene-2-carboxylic acid (CAS 23967-57-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H5ClO2S and a molecular weight of 212.653 g/mol. It is also known as 4-Chloro-1-benzothiophene-2-carboxylic acid, 4-Chlorobenzothiophene-2-carboxylic acid and 4-chloro-2-benzo[b]thiophenecarboxylic acid. Key properties include a melting point of 220-223ºC, a boiling point of 408.6±25.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 200.9±23.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

23967-57-9

Jingsj CID

J-1498915-7

Molecular Formula

C₉H₅ClO₂S

Chinese Name

4-氯苯并[b]噻吩-2-羧酸

Molecular Weight

212.653 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026