1,2-Bis(diphenylphosphine)ethane 1,2-Bis(diphenylphosphino)ethane 1,2-Ethanediylbis(diphenylphosphine) 1663-45-2 Diphos Ethylenebis(diphenylphosphine) NSC76285 P,P'-Ethylenebis(diphenylphosphine) Phosphine, 1,2-ethanediylbis[diphenyl- Phosphine, ethylenebis[diphenyl-