英文别名
                        ethyl 2-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate;2-Methyl-6-ethoxycarbonyl-7-oxo-7,8-dihydro-pyrido<2,3-d>pyrimidin;2-Methyl-6-carbethoxy-7-oxo-8H-pyrido<2,3-d>pyrimidin;ethyl 2-methyl-7-oxo-8H-pyrido[2,3-d]pyrimidine-6-carboxylate