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

5-氯-1-苯并噻吩-2-羧酸

Also known as: 5-Chloro-1-benzothiophene-2-carboxylic acid, 5-Chloro-2-benzothiophenecarboxylic acid, 5-Chlorobenzothiophene-2-carboxylic acid, 2-Carboxy-5-chlorobenzo[b]thiophene

5-Chlorobenzo[b]thiophene-2-carboxylic acid (CAS 13771-75-0) 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 5-Chloro-1-benzothiophene-2-carboxylic acid, 5-Chloro-2-benzothiophenecarboxylic acid and 5-Chlorobenzothiophene-2-carboxylic acid. Key properties include a melting point of 256-258ºC, 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.

13771-75-0

Jingsj CID

J-1110740-4

Molecular Formula

C₉H₅ClO₂S

Chinese Name

5-氯-1-苯并噻吩-2-羧酸

Molecular Weight

212.653 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026