4-Bromobutene, 1-Butene, 4-bromo-, 3-BUTENYL BROMIDE, 1-Bromo-3-butene, 4-BroMo-1-butene, 4-bromo-but-1-ene, 1-bromo-but-3-ene, Homoallyl bromide, but-3-enyl bromide, 3-bromomethyl-1-propene, 4-Bromobut-1-ene, 4-bromo-1-buten, Homoallylic bromide, 4-Bromo-1-butene