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发明人赵玉洁,何建平,周伟. "Method for the Synthesis of 2-Methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113263698 A, 授权公告日 2021-01-20.
发明人张德明,李文辉,黄志刚. "A Process for Preparing High-Purity 2-Methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115232060 A, 授权公告日 2023-02-13.
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