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发明人郭海燕,郑宇鹏,罗永刚. "A Process for Preparing High-Purity Tert-butyl (S)-6-methyl-2,7-diazaspiro[3.5]Nonane-2-carboxylate" [P]. 中国发明专利, 专利号 CN 114539610 B, 授权公告日 2018-04-08.
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