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发明人钱学锋,徐明华,赵玉洁. "A Process for Preparing High-Purity 2-(4-(Difluoromethyl)-6-hydroxy-2-(trifluoromethyl)pyridin-3-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 115812772 B, 授权公告日 2020-11-16.
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