4-pyridone

[IngvarLa]

Technically correct: N1=CCC(C=C1)=O but would expect 1H-4-pyridone: N1C=CC(C=C1)=O for any case where the H is not specified

also for alternative name: pyridine-4-one we see this is names like: 3,5-Dibromo-pyridin-4-one so it is not a single structure to change for us