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发明人赵玉洁,冯建国,刘建华. "Method for the Synthesis of Ethyl 6-methyl-4-oxo-1,4-dihydro-1,5-naphthyridine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 108620446 B, 授权公告日 2020-04-25.
发明人朱建伟,郑宇鹏,周伟. "A Process for Preparing High-Purity Ethyl 6-methyl-4-oxo-1,4-dihydro-1,5-naphthyridine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117464886 B, 授权公告日 2016-09-03.
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