Brown S R, Stevens L M, Thompson G K. "Method for the Synthesis of 4-(4-Methoxyphenoxy)-1-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid" [P]. US Patent, US 11915288 B2, 2024-06-27.
发明人孙丽萍,周伟,朱建伟. "A Process for Preparing High-Purity 4-(4-Methoxyphenoxy)-1-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110059993 B, 授权公告日 2024-12-09.
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