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ChemicalBook--->CAS DataBase List--->499-78-5

499-78-5

499-78-5 Structure

499-78-5 Structure
IdentificationBack Directory
[Name]

5-hydroxy-4-oxo-4H-pyran-2-carboxylic acid
[CAS]

499-78-5
[Synonyms]

Comenic acid
5-Hydroxy-4-oxo-
5-hydroxy-4-pyrone-2-carboxylic acid
5-hydroxy-4-oxo-2-pyrancarboxylic acid
5-hydroxy-4-oxopyran-2-carboxylic acid
5-hydroxy-4-oxo-pyran-2-carboxylic acid
5-hydroxy-4-keto-pyran-2-carboxylic acid
4H-Pyran-2-carboxylic acid, 5-hydroxy-4-oxo-
2-Carboxy-5-hydroxy-4-pyrone, Comenic acid
5-hydroxy-4-oxo-4H-pyran-2-carboxylic acid(SALTDATA: FREE)
[EINECS(EC#)]

207-891-7
[Molecular Formula]

C6H4O5
[MDL Number]

MFCD03085981
[MOL File]

499-78-5.mol
[Molecular Weight]

156.09
Chemical PropertiesBack Directory
[Melting point ]

284-294 °C
[Boiling point ]

240.29°C (rough estimate)
[density ]

1.5720 (rough estimate)
[refractive index ]

1.6400 (estimate)
[Water Solubility ]

5.1g/L(25 ºC)
[EPA Substance Registry System]

4H-Pyran-2-carboxylic acid, 5-hydroxy-4-oxo- (499-78-5)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

22
[WGK Germany ]

3
Hazard InformationBack Directory
[Uses]

5-hydroxy-4-oxo-4H-pyran-2-carboxylic acid can be used in the regenerative anti-inflammatory composition
[Uses]

Building block for an intramolecular olefin-α-pyrone cycloaddition providing the colchicine ring skeleton.
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