发明人钱学锋,陈志强,高志强. "Method for the Synthesis of Methyl 1-(2-cyanoethyl)-3-methyl-6-(pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 112790188 B, 授权公告日 2021-12-27.
发明人杨光,朱建伟,马晓峰. "A Process for Preparing High-Purity Methyl 1-(2-cyanoethyl)-3-methyl-6-(pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 112840877 B, 授权公告日 2017-03-18.
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