4,4-dimethyloxolane-2,3-dione, ketopantolactone, 2,3-Furandione,dihydro-4,4-dimethyl, 4,4-Dimethyldihydro-2,3-furandione, 4,4-dimethyl-2,3(5H)-furandione, Keto-pantoyllactone, dihydro-4,4-dimethylfuran-2,3-dione, 4,4-dimethyltetrahydrofuran-2,3-dione, Dihydro-4,4-dimethyl-2,3-Furandione, 4,4-Dimethyldihydrofuran-2,3-dione, 2-oxopantoyl lactone, 2-dehydropantoyl lactone