1,3-Epoxy-2,2-dimethylpropane 3,3-DIMETHYL-1-OXACYCLOBUTANE 3,3-Dimethyloxetane 3,3-Dimethyltrimethylene oxide 5-17-01-00085 (Beilstein Handbook Reference) 6921-35-3 BRN 0102430 Oxetane, 3,3-dimethyl- (9CI) Propane, 1,3-epoxy-2,2-dimethyl- beta,beta-Dimethyltrimethylene oxide