5-acetyl-2-hydroxy-2,5-dimethyl-dihydro-furan-3-one, 5-Acetyl-2-hydroxy-2,5-dimethyl-dihydro-furan-3-on, 5-Hydroxy-4-oxo-2.5.-dimethyl-2-acetyl-tetrahydrofuran, 5-hydroxy-5-methyl-heptane-2,3,6-trione 2->5-cyclohemiacetal, EINECS 249-691-2, dimeric biacetyl, 5-acetyl-tetrahydro-2-hydroxy-2,5-dimethyl-3-oxofurane