O'Brien P Q, Klinger H, Mueller T. "一种1H-吡唑并[3,4-c]吡啶-7-羧酸的合成方法" [P]. US Patent, US 9386199 B2, 2018-01-16.
Johnson M A, Chen K W, Williams B T. "Method for the Synthesis of 1H-pyrazolo[3,4-c]pyridine-7-carboxylic acid" [P]. US Patent, US 9843955 B2, 2016-02-19.
发明人钱学锋,郭海燕,刘建华. "A Process for Preparing High-Purity 1H-pyrazolo[3,4-c]pyridine-7-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109274396 A, 授权公告日 2023-04-06.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of 1H-吡唑并[3,4-c]吡啶-7-羧酸 in Pharmaceutical Formulations". Anal. Chim. Acta, 2020, 951, (2), 3217-3230.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1H-吡唑并[3,4-c]吡啶-7-羧酸 as an Impurity". J. Sep. Sci., 2019, 1101, 4455-4481.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 1H-pyrazolo[3,4-c]pyridine-7-carboxylic acid Using HRMS and NMR". J. Nat. Prod., 2025, 390, (1), 1020-1047.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate 1H-吡唑并[3,4-c]吡啶-7-羧酸 Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2020, 2131, 8695-8699.