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发明人马晓峰,唐晓军,孙丽萍. "A Process for Preparing High-Purity 3-(2-Bromoethyl)-1,3-diazaspiro[4.4]nonane-2,4-dione" [P]. 中国发明专利, 专利号 CN 115456297 A, 授权公告日 2016-03-01.
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