1519-47-7 NSC64113 Phosphonium, (p-phenylenedimethylene)bis[triphenyl-, dichloride Phosphonium, [1,4-phenylenebis(methylene)]bis[triphenyl-, dichloride Phosphonium, p-xylylenebis(triphenyl-, dichloride p-Xylylenebis(triphenylphosphonium chloride)