5-Chloro-4-methoxythiophene-3-carboxylic acid

5-氯-4-甲氧基噻吩-3-羧酸

Also known as: 2-Chloro-3-methoxythiophene-4-carboxylic acid, 3-Thiophenecarboxylic acid, 5-chloro-4-methoxy-, 5-chloro-4-methoxy-3-thiophenecarboxylic acid, 5-chloro-4-methoxy-thiophen-3-carboxylic acid

5-Chloro-4-methoxythiophene-3-carboxylic acid (CAS 133659-14-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H5ClO3S and a molecular weight of 192.620 g/mol. It is also known as 2-Chloro-3-methoxythiophene-4-carboxylic acid, 3-Thiophenecarboxylic acid, 5-chloro-4-methoxy- and 5-chloro-4-methoxy-3-thiophenecarboxylic acid. Key properties include a melting point of 140ºC, a boiling point of 309.6±37.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 141.0±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

133659-14-0

Jingsj CID

J-1485409-1

Molecular Formula

C₆H₅ClO₃S

Chinese Name

5-氯-4-甲氧基噻吩-3-羧酸

Molecular Weight

192.620 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026