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发明人赵玉洁,郑宇鹏,陈志强. "Method for the Synthesis of Ethyl 1-methyl-4-(phenethylamino)-1H-pyrazolo[3,4-b]pyridine-5-carboxylate" [P]. 中国发明专利, 专利号 CN 109801441 A, 授权公告日 2016-07-05.
发明人马晓峰,郑宇鹏,黄志刚. "A Process for Preparing High-Purity Ethyl 1-methyl-4-(phenethylamino)-1H-pyrazolo[3,4-b]pyridine-5-carboxylate" [P]. 中国发明专利, 专利号 CN 113666328 B, 授权公告日 2016-09-05.
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