发明人郭海燕,周伟,徐明华. "Method for the Synthesis of 3-Amino-6-(2,6-difluorophenyl)picolinic acid" [P]. 中国发明专利, 专利号 CN 113268299 A, 授权公告日 2022-01-23.
发明人马晓峰,朱建伟,罗永刚. "A Process for Preparing High-Purity 3-Amino-6-(2,6-difluorophenyl)picolinic acid" [P]. 中国发明专利, 专利号 CN 112505489 B, 授权公告日 2023-05-16.
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