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发明人冯建国,张德明,徐明华. "A Process for Preparing High-Purity 3-(1-(Benzo[d]oxazol-2-yl)hydrazinyl)butanenitrile" [P]. 中国发明专利, 专利号 CN 108408967 A, 授权公告日 2017-02-17.
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