发明人李文辉,陈志强,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114151395 A, 授权公告日 2021-02-08.
发明人林芳,王建平,黄志刚. "Method for the Synthesis of Ethyl 1-methyl-4-((4-methylbenzyl)amino)-1H-pyrazolo[3,4-b]pyridine-5-carboxylate" [P]. 中国发明专利, 专利号 CN 113810145 B, 授权公告日 2019-12-01.
发明人马晓峰,张德明,孙丽萍. "A Process for Preparing High-Purity Ethyl 1-methyl-4-((4-methylbenzyl)amino)-1H-pyrazolo[3,4-b]pyridine-5-carboxylate" [P]. 中国发明专利, 专利号 CN 114116335 A, 授权公告日 2019-09-25.
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