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发明人罗永刚,沈红梅,刘建华. "Method for the Synthesis of 3-Methyl-7-phenyl-1H-pyrazolo[3,4-d]pyridazin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 116937504 A, 授权公告日 2020-01-14.
发明人何建平,王建平,陈志强. "A Process for Preparing High-Purity 3-Methyl-7-phenyl-1H-pyrazolo[3,4-d]pyridazin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 114581950 A, 授权公告日 2020-09-20.
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