Park J H, Fischer A B, Chen K W. "一种的合成方法" [P]. US Patent, US 9468856 B2, 2020-05-28.
发明人马晓峰,杨光,陈志强. "Method for the Synthesis of 1,3-Dimethyl-6-(4-methylphenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117333950 B, 授权公告日 2017-09-25.
Fischer A B, Chen K W, Anderson J P. "A Process for Preparing High-Purity 1,3-Dimethyl-6-(4-methylphenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. US Patent, US 9095412 B2, 2019-12-06.
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