发明人孙丽萍,高志强,胡光. "Method for the Synthesis of 2-(Difluoromethyl)-3-methoxy-5-(trifluoromethoxy)pyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109294266 A, 授权公告日 2019-01-12.
发明人郭海燕,韩伟,唐晓军. "A Process for Preparing High-Purity 2-(Difluoromethyl)-3-methoxy-5-(trifluoromethoxy)pyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115809673 A, 授权公告日 2022-03-08.
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