英文同义名:
.alpha.,.beta.-Crotonolactone; .delta.,.alpha.,.beta.-Butenolide; .gamma.-Crotolactone; .gamma.-Hydroxycrotonicacidlactone; 2(5H)-Furanone (.gamma.-crotonolactone); 2-Buten-4-olide; 2-Butenoic acid, 4-hydroxy-, gamma-lactone; 2-Butenoic acid-gamma-lactone;