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
5-Amino-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4-dione
5-Amino-1,3-dimethyl-1H-pyrido[2,3-d]pyrimidine-2,4-dione
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