Synonyms: Phosphonium,1,4-butanediylbis[triphenyl-, dibromide (9CI);Phosphonium, tetramethylenebis[triphenyl-,dibromide (8CI);Tetramethylenebis[triphenylphosphonium bromide] (6CI);Tetramethylenebis[triphenylphosphonium] dibromide (7CI);1,4-Butanediylbis(triphenylphosphonium) dibromide;Butane-1,4-diylbis(triphenylphosphonium) dibromide;