4-Amino-7-methyldipyrido(1,2-a:3',3'-d)imidazole 81810-25-5 Dipyrido(1,2-a:3',2'-d)imidazol-4-amine, 7-methyl- Dipyrido(1,2-a:3',2'-d)imidazole, 4-amino-7-methyl-