发明人郭海燕,马晓峰,罗永刚. "Method for the Synthesis of 1-(Butan-2-yl)-6-methyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110362748 B, 授权公告日 2023-06-15.
Sørensen M, Lefèvre J P, Jørgensen K. "A Process for Preparing High-Purity 1-(Butan-2-yl)-6-methyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. European Patent, EP 3286503 A1, 2020-04-04.
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