2-methyloxolan-3-one, Tetrahydro-2-methylfuran-3-one, 2-methyltetrahydrofuran-3-one; Dihydro-2-methyl-3-furanone; 2-Methyltetrahydro-3-furanone (4,5-Dihydro-2-methyl-3(2H)-furanone; 2-Methyl-2H-furan-3-one; 2-Methyl-3-oxotetrahydrofuran; 2-Methyl tetrahydro-3-furanone; 4,5-Dihydro-2-methyl-3(2H)-furanone;