发明人李文辉,朱建伟,陈志强. "Method for the Synthesis of 4-(Difluoromethyl)-6-fluoro-5-nitropicolinic acid" [P]. 中国发明专利, 专利号 CN 110756822 B, 授权公告日 2015-12-15.
发明人沈红梅,郭海燕,李文辉. "A Process for Preparing High-Purity 4-(Difluoromethyl)-6-fluoro-5-nitropicolinic acid" [P]. 中国发明专利, 专利号 CN 108722789 A, 授权公告日 2018-03-23.
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