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发明人钱学锋,孙丽萍,冯建国. "A Process for Preparing High-Purity 4-Chloro-N-(4-piperidinyl)-2-pyridinecarboxamidehydrochloride" [P]. 中国发明专利, 专利号 CN 111639822 A, 授权公告日 2020-03-16.
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