I-CAS:497-23-4 I-Molecular Formula:I-C4H4O2 Isisindo se-Molecular:84.07 I-EINECS:207-839-3 Omqondofana:γ-Crotonolactone, 2-Buten-1,4-olide; I-2,5-Dihydrofuranone; 5-Oxo-2,5-dihydrofuran-3-yl ester; a,b-Crotonolactone; I-Crotonic acid, i-4-hydroxy-; I-2,5-Dihydrofuran-2-eyodwa; 2(5H)-Furanone,γ-Crotonolactone, 2-Buten-1,4-olide2 (5H)-Furanone 2-Oxo-2,5-dihydrofuran; 2(5H)-FURANONE FOR; I-SYNTHESIS 1 ML