Stevens L M, Anderson J P, Kumar R. "一种的合成方法" [P]. US Patent, US 11413739 B2, 2025-04-16.
Schröder R, Mueller T C, Lefèvre J P. "Method for the Synthesis of 5-(4-Bromobutyl)-3-methylisoxazolo[4,5-d]pyridazin-4(5H)-one" [P]. European Patent, EP 3866841 A1, 2020-08-25.
Park J H, O'Brien P Q, Patel M V. "A Process for Preparing High-Purity 5-(4-Bromobutyl)-3-methylisoxazolo[4,5-d]pyridazin-4(5H)-one" [P]. US Patent, US 10446998 B2, 2023-10-13.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2013, 1408, (1), 828-831.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2025, 1093, (2), 994-1014.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 5-(4-Bromobutyl)-3-methylisoxazolo[4,5-d]pyridazin-4(5H)-one Using HRMS and NMR". Biomed. Chromatogr., 2020, 1812, (1), 2299-2324.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2020, 236, (4), 5715-5739.