Isopropyl 4-oxopentanoate, Laevulinsaeure-isopropylester, Pentanoic acid, 4-oxo-, 1-methylethyl ester, Isopropyl 4-oxovalerate, iso-Propyl levulinate, levulinic acid isopropyl ester, Pentanoic acid,4-oxo-,1-methylethyl ester, 4-oxo-pentanoic acid,1-methylethyl ester, 2-propyl levulinate