2-Buten-4-olide
Isocrotonolactone
Cratone
5H-Furan-2-one
5-Oxo-2,5-dihydrofuran-3-yl ester
2-Butenoic acid, 4-hydroxy-, gamma-lactone
2-Oxo-2,5-dihydrofuran
gamma-Hydroxycrotonic acid lactone
gamma-Crotonolactone
gamma-Crotolactone
delta, alpha, beta-Butenolide
alpha, beta-Crotonolactone
Crotonic acid, 4-hydroxy-, gamma-lactone
2(5H)-Furanone
2,5-Dihydrofuranone
4-Hydroxy-2-butenoic acid lactone