1,3-Dimethyl-5-((1-methylethyl)amino)pyrido(4,3-d)pyrimidine-2,4(1H,3H)-dione 112500-72-8 5-Isopropylamino-1,3-dimethylpyrido(4,3-d)pyrimidine-2,4-dione Pyrido(4,3-d)pyrimidine-2,4(1H,3H)-dione, 1,3-dimethyl-5-((1-methylethyl)amino)-