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发明人黄志刚,刘建华,陈志强. "Method for the Synthesis of 6-(Difluoromethyl)-1-methyl-1H-pyrazolo[3,4-b]pyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113603140 B, 授权公告日 2024-02-11.
发明人张德明,刘建华,赵玉洁. "A Process for Preparing High-Purity 6-(Difluoromethyl)-1-methyl-1H-pyrazolo[3,4-b]pyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112327095 A, 授权公告日 2015-11-06.
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