4-Amino-2,7-dimethyldipyrido(1,2-a:3',2'-d)imidazole 81810-26-6 Dipyrido(1,2-a:3',2'-d)imidazol-4-amine, 2,7-dimethyl- Dipyrido(1,2-a:3',2'-d)imidazole, 4-amino-2,7-dimethyl-