发明人冯建国,孙丽萍,钱学锋. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110520948 A, 授权公告日 2018-11-09.
发明人马晓峰,刘建华,冯建国. "Method for the Synthesis of 2-(Difluoromethyl)-3-hydroxy-4-methylpyridine-5-acetic acid" [P]. 中国发明专利, 专利号 CN 115795881 A, 授权公告日 2024-04-28.
发明人李文辉,赵玉洁,杨光. "A Process for Preparing High-Purity 2-(Difluoromethyl)-3-hydroxy-4-methylpyridine-5-acetic acid" [P]. 中国发明专利, 专利号 CN 116044378 A, 授权公告日 2022-01-21.
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