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发明人冯建国,徐明华,郭海燕. "A Process for Preparing High-Purity 1-(2-(5-Methyl-6-(methylamino)pyridin-3-yl)piperidin-1-yl)ethan-1-one" [P]. 中国发明专利, 专利号 CN 114193290 B, 授权公告日 2021-11-02.
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