3-hydroxy-2-pyrone
2H-pyran-2-one, 3-hydroxy-
Identification
| Name | 3-hydroxy-2-pyrone |
| IUPAC | 3-hydroxypyran-2-one |
| CAS Number | 496-64-0 |
| FDA UNII | WBW7DM4PJL |
| Molecular Formula | C5 H4 O3 |
| Molecular Weight | 112.08448000 |
| MDL Number | MFCD01318559 |
Regulatory
Physical Properties
| Appearance | colorless to pale yellow clear liquid (est) |
| Assay | 95.00 to 100.00 |
| Food Chemicals Codex Listed | No |
| Melting Point | 93.00 to 94.00 °C. @ 760.00 mm Hg |
| Boiling Point | 285.00 to 286.00 °C. @ 760.00 mm Hg (est) |
| Flash Point | 296.00 °F. TCC ( 146.70 °C. ) (est) |
| logP (o/w) | -0.763 (est) |
| Soluble in | alcohol |
| Insoluble in | water |
No sensory data available
Safety Information
| Oral/Parenteral Toxicity | Not determined |
| Dermal Toxicity | Not determined |
| Inhalation Toxicity | Not determined |
GHS Classification
['GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)', 'GHS Label elements, including precautionary statements']
Safety in Use
| Category | natural substances and extractives |
| Recommendation for 3-hydroxy-2-pyrone usage levels up to | not for fragrance use. |
| Recommendation for 3-hydroxy-2-pyrone flavor usage levels up to | not for flavor use. |
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Potential Uses
Natural Occurrence
Synonyms
3-
hydroxy-2-pyranone
3-
hydroxy-2H-pyran-2-one
3-
hydroxypyrone
2H-
pyran-2-one, 3-hydroxy-
PubMed:
Construction of the septahydroxylated ABC-ring system of dihydro-β-agarofurans: application of 6-exo-dig radical cyclization.
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Enantioselective Total Synthesis of (+)-Iso-A82775C, a Proposed Biosynthetic Precursor of Chloropupukeananin.
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Asymmetric synthesis of Ampelomin A and ent-Epiampelomin A.
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Catalytic activity of an encaged Verkade's superbase in a base-catalyzed Diels-Alder reaction.
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Degradation of ascorbic acid in ethanolic solutions.
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Browning in ethanolic solutions of ascorbic acid and catechin.
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Amino-indanol catalyzed enantioselective reactions of 3-hydroxy-2-pyridones.
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Evaluation of insulin-mimetic activities of vanadyl and zinc(II) complexes from the viewpoint of heterocyclic bidentate ligands.
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Speciation of M+3-hydroxypyrone chelation complexes by electrospray ionization ion trap and Fourier transform ion cyclotron resonance mass spectrometry.
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Browning of model orange juice solution: factors affecting the formation of decomposition products.
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Browning and decomposed products of model orange juice.
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Analysis of the transformation products of dehydro-L-ascorbic acid by ion-pairing high-performance liquid chromatography.
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Volatile degradation products of l-dehydroascorbic acid.
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Spectrophotometric determination of iron(3) with 2-methyl-3-hydroxypyrone.
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[On the volumetric determination of 2-methyl-3-hydroxypyrone and related compounds].
PubMed:
[On the volumetric determination of 2-methyl-3-hydroxypyrone (maltol) and related compounds].