2(5H)-Furanone
Crotonic acid, 4-hydroxy-, γ-lactone
γ-Hydroxycrotonic acid lactone
Isocrotonolactone
4-Hydroxy-2-butenoic acid γ-lactone
γ-Crotonolactone
2-Butenoic acid, 4-hydroxy-, γ-lactone
Δα,β-Butenolide
4-Hydroxy-2-butenoic acid lactone
2-Buten-4-olide
2-Oxo-2,5-dihydrofuran
α,β-Crotonolactone
γ-Crotolactone
5H-Furan-2-one
Cratone
2,5-Dihydrofuranone
5-Oxo-2,5-dihydrofuran-3-yl ester
NSC 197009
NSC 51296
2H-Furan-5-one