(R-(R*,R*))-2,2'-Bioxirane 1120-61-2 2,2'-Bioxirane, (R-(R*,R*))- (9CI) 2R:3R-Diepoxybutane 30419-67-1 Butane, D-1,2:3,4-diepoxy- D-Diepoxybutane D-Erythritol anhydride D-Threitol, 1,2:3,4-dianhydro- NSC 32606 l-Butadiene epoxide