1,1'-(Pyrimidine-2,4-diyl)diguanidine 31414-49-0 5-25-12-00021 (Beilstein Handbook Reference) BRN 0656450 GUANIDINE, 1,1'-(PYRIMIDINE-2,4-DIYL)DI- Pyrimidine, 2,4-diguanidino-