4-Pyrone

4-Pyrone^[1]

Names
IUPAC name Pyran-4-one
Other names γ-Pyrone 4-Pyranone
Identifiers
CAS Number	108-97-4
3D model (Jmol)	Interactive image Interactive image
ChEBI	CHEBI:37966
ChemSpider	7680
ECHA InfoCard	100.003.305
PubChem	7968
InChI InChI=1S/C5H4O2/c6-5-1-3-7-4-2-5/h1-4H Key: CVQUWLDCFXOXEN-UHFFFAOYSA-N InChI=1/C5H4O2/c6-5-1-3-7-4-2-5/h1-4H Key: CVQUWLDCFXOXEN-UHFFFAOYAG
SMILES C1=COC=CC1=O O=C\1/C=C\O/C=C/1
Properties
Chemical formula	C5H4O2
Molar mass	96.08
Melting point	32 to 34 °C (90 to 93 °F; 305 to 307 K)
Boiling point	210 to 215 °C (410 to 419 °F; 483 to 488 K)
Hazards
Flash point	101 °C (214 °F; 374 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

4-Pyrone (γ-pyrone or pyran-4-one) is an unsaturated cyclic chemical compound with the molecular formula C₅H₄O₂. It is isomeric with 2-pyrone.

4-Pyrone forms the central core of several natural chemical compounds including maltol and kojic acid and of the important class of the Flavones.

Maltol	Kojic acid

See also

• Pyrone
• 4-pyridone

References

1. 4H-Pyran-4-one at Sigma-Aldrich