发明人郑宇鹏,陈志强,黄志刚. "Method for the Synthesis of 3-Methyl-7-(2-nitrophenyl)isoxazolo[4,5-d]pyridazin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 109813994 A, 授权公告日 2024-03-17.
发明人周伟,冯建国,孙丽萍. "A Process for Preparing High-Purity 3-Methyl-7-(2-nitrophenyl)isoxazolo[4,5-d]pyridazin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 110753494 B, 授权公告日 2019-04-11.
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". Food Chem., 2023, 2093, (10), 5274-5299.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2011, 1350, (7), 8370-8400.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 3-Methyl-7-(2-nitrophenyl)isoxazolo[4,5-d]pyridazin-4(5H)-one Using HRMS and NMR". Talanta, 2024, 1020, (6), 8587-8599.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2021, 1885, (11), 3436-3447.