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发明人郑宇鹏,郭海燕,周伟. "A Process for Preparing High-Purity 4-Amino-2-(difluoromethyl)-5-methylpyridin-3-ol" [P]. 中国发明专利, 专利号 CN 109573212 A, 授权公告日 2016-03-28.
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