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发明人郑宇鹏,张德明,林芳. "A Process for Preparing High-Purity N-(sec-Butyl)-2-(8-methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl)acetamide" [P]. 中国发明专利, 专利号 CN 112656155 A, 授权公告日 2017-04-28.
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