Anderson J P, Patel M V, Roberts E F. "Method for the Synthesis of 5-Chloro-6-cyclopropyl-1-methyl-1H-pyrazolo[3,4-b]pyridin-3-amine" [P]. US Patent, US 11455595 B2, 2021-12-23.
发明人刘建华,韩伟,马晓峰. "A Process for Preparing High-Purity 5-Chloro-6-cyclopropyl-1-methyl-1H-pyrazolo[3,4-b]pyridin-3-amine" [P]. 中国发明专利, 专利号 CN 109337549 B, 授权公告日 2019-01-22.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2022, 1248, 7647-7653.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2018, 1877, (2), 25-45.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 5-Chloro-6-cyclopropyl-1-methyl-1H-pyrazolo[3,4-b]pyridin-3-amine Using HRMS and NMR". Sci. Total Environ., 2022, 1809, (6), 1413-1440.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2019, 2183, 4740-4767.