发明人林芳,郑宇鹏,王建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117611677 A, 授权公告日 2022-12-16.
发明人徐明华,林芳,高志强. "Method for the Synthesis of 2-(Difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-5-acetic acid" [P]. 中国发明专利, 专利号 CN 109585655 A, 授权公告日 2020-02-27.
发明人王建平,胡光,徐明华. "A Process for Preparing High-Purity 2-(Difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-5-acetic acid" [P]. 中国发明专利, 专利号 CN 113632069 A, 授权公告日 2018-07-19.
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