1,4-Bis(bis(1-aziridinyl)phosphinothioyl)piperazine 1950-08-9 5-23-03-00231 (Beilstein Handbook Reference) BRN 0629376 NSC 514540 Phosphine sulfide, 1,4-piperazinediylbis(bis(1-aziridinyl)- Piperazine, 1,4-bis(bis(1-aziridinyl)phosphinothioyl)- Thiodipin Thiodipine