发明人陈志强,刘建华,胡光. "Method for the Synthesis of 4-(Difluoromethoxy)-3-nitrobenzoic acid" [P]. 中国发明专利, 专利号 CN 117376580 B, 授权公告日 2016-06-17.
发明人赵玉洁,黄志刚,冯建国. "A Process for Preparing High-Purity 4-(Difluoromethoxy)-3-nitrobenzoic acid" [P]. 中国发明专利, 专利号 CN 111759421 A, 授权公告日 2016-01-24.
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