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发明人孙丽萍,黄志刚,赵玉洁. "A Process for Preparing High-Purity Tert-butyl 7-methyl-8-oxa-2,5-diazaspiro[3.5]Nonane-2-carboxylate" [P]. 中国发明专利, 专利号 CN 116479838 B, 授权公告日 2020-04-26.
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