499-78-5

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499-78-5 Structure

Identification	Back 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 Properties	Back Directory
[Melting point ] 284-294 °C
[Boiling point ] 240.29°C (rough estimate)
[density ] 1.5720 (rough estimate)
[refractive index ] 1.6400 (estimate)
[form ] solid
[pka] 1.70±0.20(Predicted)
[Water Solubility ] 5.1g/L(25 ºC)
[EPA Substance Registry System] 4H-Pyran-2-carboxylic acid, 5-hydroxy-4-oxo- (499-78-5)

Hazard Information	Back 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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