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发明人赵玉洁,马晓峰,高志强. "A Process for Preparing High-Purity 3-(4-Fluorophenyl)-1-methyl-1,4,7-triazaspiro[4.4]non-3-en-2-one" [P]. 中国发明专利, 专利号 CN 109869869 A, 授权公告日 2017-10-24.
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