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发明人黄志刚,唐晓军,王建平. "A Process for Preparing High-Purity 2-(2-Chloro-4-(chloromethyl)-6-(difluoromethyl)pyridin-3-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 109618257 A, 授权公告日 2015-05-26.
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