13861-97-7 2(3H)-Furanone, dihydro-4,4-dimethyl- 4,4-DIMETHYLDIHYDROFURANONE 4,4-Dimethylbutyrolactone 5-17-09-00045 (Beilstein Handbook Reference) BRN 0107181 Dihydro-4,4-dimethyl-2(3H)-furanone beta,beta-Dimethylbutylrolacton [German]