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 is prepared via the thermal decarboxylation of chelidonic acid.

[2] 4-Pyrone and its derivatives react with amines in protic solvents to form 4-Pyridones.

[2][3][4] 4-Pyrone forms the central core of several natural chemical compounds,[5] including maltol, meconic acid, kojic acid, and of the important class of the Flavones.