发明人冯建国,钱学锋,张德明. "Method for the Synthesis of 3-(Difluoromethoxy)isonicotinic acid" [P]. 中国发明专利, 专利号 CN 114223715 A, 授权公告日 2015-01-15.
发明人何建平,周伟,刘建华. "A Process for Preparing High-Purity 3-(Difluoromethoxy)isonicotinic acid" [P]. 中国发明专利, 专利号 CN 109520051 B, 授权公告日 2018-06-05.
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