10203-50-6 2,3-EPOXYBUTANE (TRANS) 21490-63-1 5-17-01-00061 (Beilstein Handbook Reference) BRN 0079772 Butane, 2,3-epoxy-, trans- CCRIS 3759 EINECS 244-406-8 Oxirane, 2,3-dimethyl-, trans- (9CI) trans-2,3-Dimethyloxirane trans-2,3-Epoxybutane trans-2-Butene oxide trans-2-Butylene oxide