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发明人郭海燕,冯建国,唐晓军. "Method for the Synthesis of tert-Butyl 4-(4-bromo-2,3-difluorophenyl)piperazine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 111692700 B, 授权公告日 2019-09-19.
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