4-oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid

4-氧代-4,5,6,7-四氢苯并呋喃-3-羧酸

Also known as: 4-oxo-4,5,6,7-tetrahydrobenzofuran-3-carboxylic acid, 4-oxo-4,5,6,7-tetrahydrobenzo[b]furan-3-carboxylic acid, 4-oxo-6,7-dihydro-5H-1-benzofuran-3-carboxylic acid, 4,5,6,7-tetrahydro-4-oxo-3-benzofurancarboxylic acid

4-oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid (CAS 56671-28-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8O4 and a molecular weight of 180.15700 g/mol. It is also known as 4-oxo-4,5,6,7-tetrahydrobenzofuran-3-carboxylic acid, 4-oxo-4,5,6,7-tetrahydrobenzo[b]furan-3-carboxylic acid and 4-oxo-6,7-dihydro-5H-1-benzofuran-3-carboxylic acid. Key properties include a melting point of 140ºC, a boiling point of 383.5ºC at 760mmHg, a density of 1.406g/cm3 and a flash point of 185.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

56671-28-4

Jingsj CID

J-1424330-7

Molecular Formula

C₉H₈O₄

Chinese Name

4-氧代-4,5,6,7-四氢苯并呋喃-3-羧酸

Molecular Weight

180.15700 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026