发明人刘建华,冯建国,高志强. "Method for the Synthesis of 4-Hydroxy-6-oxo-5,6-dihydro-1,5-naphthyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109290568 B, 授权公告日 2018-01-01.
发明人马晓峰,黄志刚,郑宇鹏. "A Process for Preparing High-Purity 4-Hydroxy-6-oxo-5,6-dihydro-1,5-naphthyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113498966 A, 授权公告日 2019-09-08.
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