4,6-Bis(1-aziridinyl)-5-nitropyrimidine 4-25-00-02817 (Beilstein Handbook Reference) 5-Nitro-4,6-bis-ethyleneiminopyrimidine 64441-00-5 BRN 0249345 Pyrimidine, 4,6-bis(1-aziridinyl)-5-nitro-