发明人马晓峰,徐明华,王建平. "Method for the Synthesis of 3',4'-Dihydrospiro[piperidine-4,2'-pyrano[3,2-c]pyridine]" [P]. 中国发明专利, 专利号 CN 112641929 B, 授权公告日 2016-04-16.
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