发明人刘建华,孙丽萍,冯建国. "Method for the Synthesis of 5-tert-Butyl 3-ethyl 7-methyl-6,7-dihydro-1H-pyrazolo[4,3-c]pyridine-3,5(4H)-dicarboxylate" [P]. 中国发明专利, 专利号 CN 117577026 B, 授权公告日 2016-04-15.
发明人孙丽萍,林芳,赵玉洁. "A Process for Preparing High-Purity 5-tert-Butyl 3-ethyl 7-methyl-6,7-dihydro-1H-pyrazolo[4,3-c]pyridine-3,5(4H)-dicarboxylate" [P]. 中国发明专利, 专利号 CN 112470474 A, 授权公告日 2024-12-08.
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". J. Agric. Food Chem., 2017, 456, (4), 1282-1301.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2013, 2283, (7), 8059-8063.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 5-tert-Butyl 3-ethyl 7-methyl-6,7-dihydro-1H-pyrazolo[4,3-c]pyridine-3,5(4H)-dicarboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2015, 544, (7), 3089-3094.