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发明人张德明,韩伟,刘建华. "Method for the Synthesis of Tert-butyl 1,5-dioxa-8-azaspiro[2.6]Nonane-8-carboxylate" [P]. 中国发明专利, 专利号 CN 114515731 B, 授权公告日 2023-12-23.
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