CAS:497-23-4 Molekylformel:C4H4O2 Molekylvikt:84,07 EINECS:207-839-3 Synonymer:y-krotonolakton, 2-buten-1,4-olid; 2,5-dihydrofuranon; 5-oxo-2,5-dihydrofuran-3-ylester; a,b-krotonolakton; krotonsyra, 4-hydroxi-; 2,5-dihydrofuran-2-on; 2(5H)-furanon, y-krotonolakton, 2-buten-1,4-olid2(5H)-furanon 2-oxo-2,5-dihydrofuran; 2(5H)-FURANON FÖR; SYNTES 1 ML