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发明人张德明,韩伟,赵玉洁. "Method for the Synthesis of 4-(5-(Difluoromethyl)-1,3,4-oxadiazol-2-yl)benzoic acid" [P]. 中国发明专利, 专利号 CN 113937870 B, 授权公告日 2019-10-02.
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