Synonyms: 5-Amino-1,3-dimethylpyrido(2,3-d)pyrimidine-2,4(1H,3H)-dione;5-amino-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione;Pyrido(2,3-d)pyrimidine-2,4(1H,3H)-dione, 5-amino-1,3-dimethyl-;LS-134133;5-amino-1,3-dimethylpyrido[3,2-e]pyrimidine-2,4-dione