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发明人李文辉,马晓峰,韩伟. "A Process for Preparing High-Purity 5-((6-Chloropyrimidin-4-yl)amino)pyrazine-2-carbonitrile" [P]. 中国发明专利, 专利号 CN 112903205 A, 授权公告日 2017-08-17.
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