发明人张德明,周伟,黄志刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116669445 A, 授权公告日 2018-09-12.
发明人赵玉洁,冯建国,林芳. "Method for the Synthesis of ethyl 2-ethyl-6-oxo-6,7-dihydro-2h-pyraZolo[3,4-b]pyridine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 115963240 B, 授权公告日 2019-11-09.
发明人马晓峰,刘建华,王建平. "A Process for Preparing High-Purity ethyl 2-ethyl-6-oxo-6,7-dihydro-2h-pyraZolo[3,4-b]pyridine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 115917366 B, 授权公告日 2021-06-27.
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