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发明人张德明,刘建华,杨光. "A Process for Preparing High-Purity 1-(Azetidin-3-yl)-4-methylpiperidin-4-ol dihydrochloride" [P]. 中国发明专利, 专利号 CN 109796810 A, 授权公告日 2020-08-27.
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