发明人张德明,冯建国,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109163731 A, 授权公告日 2022-05-20.
发明人郭海燕,高志强,冯建国. "Method for the Synthesis of 4-(Difluoromethyl)-5-methoxy-6-(trifluoromethoxy)picolinic acid" [P]. 中国发明专利, 专利号 CN 115108620 A, 授权公告日 2015-08-08.
发明人王建平,刘建华,韩伟. "A Process for Preparing High-Purity 4-(Difluoromethyl)-5-methoxy-6-(trifluoromethoxy)picolinic acid" [P]. 中国发明专利, 专利号 CN 117024154 A, 授权公告日 2015-09-10.
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