发明人王建平,徐明华,杨光. "Method for the Synthesis of 2-(Difluoromethyl)-6-hydroxy-3-(trifluoromethyl)pyridine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112939995 B, 授权公告日 2017-05-12.
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