发明人李文辉,刘建华,陈志强. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116899814 A, 授权公告日 2024-03-16.
发明人胡光,张德明,何建平. "Method for the Synthesis of Ethyl 2-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridine-7-carboxylate" [P]. 中国发明专利, 专利号 CN 115191232 B, 授权公告日 2022-11-01.
发明人郑宇鹏,徐明华,高志强. "A Process for Preparing High-Purity Ethyl 2-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridine-7-carboxylate" [P]. 中国发明专利, 专利号 CN 110818384 A, 授权公告日 2017-12-18.
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". Chromatographia, 2017, 2299, 1269-1295.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2014, 1500, (5), 4350-4373.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridine-7-carboxylate Using HRMS and NMR". Anal. Chem., 2010, 356, 8387-8401.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2020, 2432, 3517-3525.