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发明人孙丽萍,高志强,韩伟. "A Process for Preparing High-Purity 2-((2-Fluorophenyl)sulfonyl)-2-(piperidin-2-ylidene)acetonitrile" [P]. 中国发明专利, 专利号 CN 111204138 B, 授权公告日 2016-02-04.
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