发明人张德明,李文辉,郭海燕. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112445763 A, 授权公告日 2019-03-05.
发明人钱学锋,马晓峰,朱建伟. "Method for the Synthesis of tert-Butyl 3-formyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate" [P]. 中国发明专利, 专利号 CN 111631870 B, 授权公告日 2019-09-15.
发明人郑宇鹏,高志强,何建平. "A Process for Preparing High-Purity tert-Butyl 3-formyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate" [P]. 中国发明专利, 专利号 CN 108187990 B, 授权公告日 2024-07-22.
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