3-Oxo-2,3-dihydrobenzo[b]thiophene-2-carboxylic acid

2,3-二氢-3-氧代-苯并[b]噻吩-2-羧酸

Also known as: 2,3-Dihydro-3-oxobenzo[b]thiophene-2-carboxylic acid, 3-oxo-1-benzothiophene-2-carboxylic acid, Benzo[b]thiophene-2-carboxylic acid, 2,3-dihydro-3-oxo-, Thioindoxyl-2-carboxylic acid, 2,3-Dihydro-3-oxobenzothiophen-2-carbonsaeure

3-Oxo-2,3-dihydrobenzo[b]thiophene-2-carboxylic acid (CAS 6421-82-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H6O3S and a molecular weight of 194.20700 g/mol. It is also known as 2,3-Dihydro-3-oxobenzo[b]thiophene-2-carboxylic acid, 3-oxo-1-benzothiophene-2-carboxylic acid and Benzo[b]thiophene-2-carboxylic acid, 2,3-dihydro-3-oxo-. Key properties include a boiling point of 423ºC at 760 mmHg, a density of 1.532g/cm3 and a flash point of 209.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

6421-82-5

Jingsj CID

J-1357810-5

Molecular Formula

C₉H₆O₃S

Chinese Name

2,3-二氢-3-氧代-苯并[b]噻吩-2-羧酸

Molecular Weight

194.20700 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026