120075-44-7 4,4'-(1,7-Diaminoheptamethylene)bis(6,7-bis(1-aziridinyl)-5,8-quinazolinedione) 5,8-Quinazolinedione, 4,4'-(1,7-heptanediyldiiminobis(6,7-bis(1-aziridinyl)- BRN 5699426 R54