Synonyms: 4',4',6',6'-Tetrakis(1-aziridinyl)-1,3,4',4',6',6'-hexahydrospiro(2H-1,3,2-benzodiazaphosphole- 2,2'-λ5(1,3,5,2,4,6) triazatriphosphorine);4',4',6',6'-tetrakis(1-aziridinyl)-1,3,4',4',6',6'-hexahydrospiro(2H-1,3,2-benzodiazaphosphole-2,2'-lambda(5)(1,3,5,2,4,6)triazatriphosphorine)