发明人郭海燕,韩伟,林芳. "Method for the Synthesis of 2-(Difluoromethyl)-4-hydroxy-6-(trifluoromethoxy)pyridine-3-acetic acid" [P]. 中国发明专利, 专利号 CN 117228987 B, 授权公告日 2022-08-10.
发明人王建平,张德明,郑宇鹏. "A Process for Preparing High-Purity 2-(Difluoromethyl)-4-hydroxy-6-(trifluoromethoxy)pyridine-3-acetic acid" [P]. 中国发明专利, 专利号 CN 111743961 A, 授权公告日 2025-10-08.
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