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发明人高志强,朱建伟,唐晓军. "A Process for Preparing High-Purity tert-Butyl 3-(4-ethynylpiperidin-1-yl)azetidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 110622189 B, 授权公告日 2020-01-25.
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