13150-18-0 4,6-Bis(1-aziridinyl)-2,5-dichloropyrimidine 4,6-Di(ethyleneimino)-2,5-dichloropyrimidine 5-25-12-00068 (Beilstein Handbook Reference) BRN 0656736 Pyrimidine, 4,6-bis(1-aziridinyl)-2,5-dichloro-