6-(3,4-dimethoxyphenyl)-2-methyl-1H-pyrido[3,2-d]pyrimidin-4-one

1,2-二甲基-1H-苯并咪唑-5-羧酸

ethyl N-(1H-indazole-3-carbonyl)ethanehydrazonate

4-methyl-2H-[1,2,4]triazino[4,5-b]indazol-1-one

5,7-dichloro-4-ethoxy-2-methylpyrido[4,3-d]pyrimidine