发明人杨光,李文辉,何建平. "Method for the Synthesis of 3-Methyl-6-(4-methyl-3-nitrophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-8-amine" [P]. 中国发明专利, 专利号 CN 112159603 B, 授权公告日 2023-01-06.
发明人黄志刚,杨光,何建平. "A Process for Preparing High-Purity 3-Methyl-6-(4-methyl-3-nitrophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-8-amine" [P]. 中国发明专利, 专利号 CN 115773994 B, 授权公告日 2020-05-11.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2011, 1041, (4), 9430-9434.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2015, 1717, 1751-1765.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 3-Methyl-6-(4-methyl-3-nitrophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-8-amine Using HRMS and NMR". Anal. Methods, 2020, 1599, (11), 3770-3791.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2024, 2038, 1801-1831.