发明人马晓峰,沈红梅,徐明华. "Method for the Synthesis of 6-(Pyridin-3-yl)-1-(thiophen-2-ylmethyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108258457 B, 授权公告日 2024-05-18.
发明人郑宇鹏,黄志刚,马晓峰. "A Process for Preparing High-Purity 6-(Pyridin-3-yl)-1-(thiophen-2-ylmethyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117254811 A, 授权公告日 2023-07-04.
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