发明人王建平,周伟,陈志强. "Method for the Synthesis of 4-Chloro-5-(difluoromethyl)-3-nitropyridine-2-acetic acid" [P]. 中国发明专利, 专利号 CN 112557330 B, 授权公告日 2019-07-18.
发明人郭海燕,唐晓军,杨光. "A Process for Preparing High-Purity 4-Chloro-5-(difluoromethyl)-3-nitropyridine-2-acetic acid" [P]. 中国发明专利, 专利号 CN 114264683 A, 授权公告日 2018-11-17.
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