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发明人孙丽萍,钱学锋,韩伟. "A Process for Preparing High-Purity [(1'-Methyl-1,4'-bipiperidin-4-yl)methyl]-(pyridin-4-ylmethyl)amine tetrahydrochloride" [P]. 中国发明专利, 专利号 CN 112505434 A, 授权公告日 2017-04-02.
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