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发明人李文辉,孙丽萍,高志强. "A Process for Preparing High-Purity 2-{[(oxolan-2-yl)methyl]amino}benzene-1,3-dicarbonitrile" [P]. 中国发明专利, 专利号 CN 112974774 B, 授权公告日 2021-11-21.
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