CAS:497-23-4 Fuafua mole:C4H4O2 Molecular Weight:84.07 EINECS:207-839-3 upu uiga tutusa:γ-Crotonolactone, 2-Buten-1,4-olide; 2,5-Dihydrofuranone; 5-Oxo-2,5-dihydrofuran-3-yl ester; a,b-Crotonolactone; Crotonic acid, 4-hydroxy-; 2,5-Dihydrofuran-2-tasi; 2(5H)-Furanone,γ-Crotonolactone, 2-Buten-1,4-olide2(5H)-Furanone 2-Oxo-2,5-dihydrofuran; 2(5H)-FURANONE MO ; FA'A'OGA 1 ML