发明人周伟,孙丽萍,马晓峰. "Method for the Synthesis of 2-(Difluoromethyl)-5-hydroxy-3-methylpyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108371144 B, 授权公告日 2020-01-21.
发明人杨光,李文辉,张德明. "A Process for Preparing High-Purity 2-(Difluoromethyl)-5-hydroxy-3-methylpyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115899324 A, 授权公告日 2020-04-07.
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