2-Nitroso-6-methyldipyrido(1,2-a-3',2'-d)imidazole 2-Nitroso-6-methyldipyrido(1,2-a:3',2'-d)imidazole 6-Methyl-2-nitrosodipyrido(1,2-a:3',2'-d)imidazole 88899-70-1 Dipyrido(1,2-a:3',2'-d)imidazole, 6-methyl-2-nitroso-