3-Amino-2-(2-chlorophenyl)pyrido[2,3-d]pyrimidin-4(3h)-one
3-Amino-2-(4-chlorophenyl)pyrido[2,3-d]pyrimidin-4(3h)-one
3-Amino-2-(5-methoxypyridin-3-yl)pyrido[2,3-d]pyrimidin-4(3h)-one
3-Amino-2-(5-chloropyridin-3-yl)pyrido[2,3-d]pyrimidin-4(3h)-one
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