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发明人黄志刚,郭海燕,张德明. "A Process for Preparing High-Purity Tert-butyl 7-oxo-7H-spiro[furo[3,4-b]pyridine-5,4'-piperidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 113058695 A, 授权公告日 2019-06-13.
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