发明人张德明,赵玉洁,刘建华. "Method for the Synthesis of 4-(Difluoromethoxy)-3-fluorobenzoic acid" [P]. 中国发明专利, 专利号 CN 117719419 A, 授权公告日 2017-04-21.
Anderson J P, Yamamoto T, Fischer A B. "A Process for Preparing High-Purity 4-(Difluoromethoxy)-3-fluorobenzoic acid" [P]. US Patent, US 11480949 B2, 2018-12-27.
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