CAS;497-23-4 Formulae hypotheticae:C4H4O2 Pondus hypotheticum:84.07 EINECS:207-839-3 Synonyma:γ-Crotonolactone, 2-Buten-1,4-olide; 2,5-Dihydrofuranone; 5-Oxo-2,5-dihydrofuran-3-yl ester; a,b-Crotonolactone; Acidum Crotonicum 4-hydroxy- ticum; 2,5-Dihydrofuran-2-unum; 2(5H)-Furanone, γ-Crotonolactone, 2-Buten-1,4-olide2(5H)-Furanone 2-Oxo-2,5-dihydrofuran; 2(5H)-FURANONE FOR ; SYNTHESIS 1 ML