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发明人赵玉洁,何建平,孙丽萍. "A Process for Preparing High-Purity 2-(Difluoromethyl)-3-methylpyridine-4-acetonitrile" [P]. 中国发明专利, 专利号 CN 110259371 B, 授权公告日 2016-01-01.
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