发明人郑宇鹏,马晓峰,刘建华. "Method for the Synthesis of 1-(3,4-Dimethylphenyl)-4-isopropyl-1H-pyrazolo[3,4-d]pyridazine-7-thiol" [P]. 中国发明专利, 专利号 CN 108370765 B, 授权公告日 2017-11-20.
发明人张德明,孙丽萍,钱学锋. "A Process for Preparing High-Purity 1-(3,4-Dimethylphenyl)-4-isopropyl-1H-pyrazolo[3,4-d]pyridazine-7-thiol" [P]. 中国发明专利, 专利号 CN 115267834 A, 授权公告日 2020-07-16.
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