TETRAMETHYLENEBIS(TRIPHENYLPHOSPHONIUM BROMIDE) TETRAMETHYLENEBIS(TRIPHENYLPHOSPHONIUM) DIBROMIDE 1,4-Butylene-bis(triphenylphosphonium bromide), 98 % 1,4-BUTYLENE-BIS(TRIPHENYLPHOSPHONIUM BROMIDE) 1,4-BIS(TRIPHENYLPHOSPHONIO)BUTANE DIBROMIDE Phosphorane, 1,4-butanediylbis[bromotriphenyl- (9CI)