2-Amino-6-aziridino-4-methyl-5-nitropyrimidine 4-25-00-02893 (Beilstein Handbook Reference) 5-Nitro-2-amino-4-ethyleneimino-6-methylpyrimidine 64440-91-1 BRN 0220652 Pyrimidine, 2-amino-6-aziridino-4-methyl-5-nitro-