Nowak P, Mueller T C, Rossi M. "Method for the Synthesis of 3'-Methyl-2',7'-dihydrospiro[cyclohexane-1,4'-pyrazolo[3,4-b]pyridin]-6'(5'H)-one" [P]. European Patent, EP 3383433 A1, 2024-07-06.
发明人罗永刚,高志强,韩伟. "A Process for Preparing High-Purity 3'-Methyl-2',7'-dihydrospiro[cyclohexane-1,4'-pyrazolo[3,4-b]pyridin]-6'(5'H)-one" [P]. 中国发明专利, 专利号 CN 117948660 A, 授权公告日 2020-03-03.
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