levulinic acid isobutyl ester, Pentanoic acid,4-oxo-,2-methylpropyl ester, Pentanoic acid, 4-oxo-, 2-methylpropyl ester, Isobutyl 4-oxovalerate, 4-Oxopentansaeure-isobutylester, EINECS 223-162-6, 4-oxo-pentanoic acid,2-methylpropyl ester, Laevulinsaeure-isobutylester, iso-Butyl levulinate
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