Comenic Acid

5-羟基-4-氧代-4H-吡喃-2-羧酸

Also known as: 5-Hydroxy-4-oxo-4H-pyran-2-carboxylic acid, 2-Carboxy-5-hydroxy-4-pyrone, 5-hydroxy-2-carboxy-4-pyrone, 5-hydroxy-4-keto-pyran-2-carboxylic acid, 5-hydroxy-4-oxo-pyran-2-carboxylic acid, 5-hydroxy-4-oxopyran-2-carboxylic acid, 5-hydroxy-4-pyrone-2-carboxylic acid

Comenic Acid (CAS 499-78-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H4O5 and a molecular weight of 156.09300 g/mol. It is also known as 5-Hydroxy-4-oxo-4H-pyran-2-carboxylic acid, 2-Carboxy-5-hydroxy-4-pyrone and 5-hydroxy-2-carboxy-4-pyrone. Key properties include a melting point of 284-294ºC, a boiling point of 420.7ºC at 760mmHg, a density of 1.819g/cm3 and a flash point of 187.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

499-78-5

Jingsj CID

J-1454569-4

Molecular Formula

C₆H₄O₅

Chinese Name

5-羟基-4-氧代-4H-吡喃-2-羧酸

Molecular Weight

156.09300 g/mol

Category

Organic Acids

Last updated

8/21/2026