(R)-4-Bromostyrene oxide , with CAS number of 62566-68-1, can be called oxirane, 2-(4-bromophenyl)- ; 2-(4-Bromophenyl)oxirane ; 4-Bromostyrene oxide ; Oxirane, (4-bromophenyl)- (9CI) ; Oxirane, (p-bromophenyl)- .