Schröder R, Roberts E F, Kumar R. "一种的合成方法" [P]. US Patent, US 11720875 B2, 2015-02-03.
发明人高志强,马晓峰,韩伟. "Method for the Synthesis of Ethyl 7-chloro-1H-pyrazolo[4,3-B]pyridine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 114290256 B, 授权公告日 2025-09-19.
Park J H, Lee S K, Hughes D C. "A Process for Preparing High-Purity Ethyl 7-chloro-1H-pyrazolo[4,3-B]pyridine-6-carboxylate" [P]. US Patent, US 11174063 B2, 2015-06-03.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2010, 1261, 9347-9365.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2013, 1781, 7368-7395.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 7-chloro-1H-pyrazolo[4,3-B]pyridine-6-carboxylate Using HRMS and NMR". J. Chromatogr. A, 2012, 458, 3476-3494.