26004-68-2 2H-Pyran-2-one, 4-hydroxy-6-methyl-3-(1-oxo-2-butenyl)- 3-Crotonil-4-idrossi-6-metil-2H-piran-2-one [Italian] 3-Crotonyl-4-hydroxy-6-methyl-2H-pyran-2-one 5-18-03-00077 (Beilstein Handbook Reference) BRN 1283535