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发明人刘建华,周伟,黄志刚. "Method for the Synthesis of 6-Methyl-1-(propan-2-yl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111643286 B, 授权公告日 2019-07-11.
发明人徐明华,朱建伟,郭海燕. "A Process for Preparing High-Purity 6-Methyl-1-(propan-2-yl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113696297 A, 授权公告日 2022-03-13.
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