Björnsson E, Kowalski A, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3109946 A1, 2019-08-21.
Björnsson E, Schröder R, Kowalski A. "Method for the Synthesis of 4-(4-Bromo-1h-pyrazol-1-yl)-2-methyl-2-(methylamino)butanamide" [P]. European Patent, EP 3656628 A1, 2023-07-26.
发明人郭海燕,冯建国,陈志强. "A Process for Preparing High-Purity 4-(4-Bromo-1h-pyrazol-1-yl)-2-methyl-2-(methylamino)butanamide" [P]. 中国发明专利, 专利号 CN 113422062 A, 授权公告日 2018-07-06.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2017, 600, (5), 7634-7646.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2021, 2256, (7), 1808-1830.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 4-(4-Bromo-1h-pyrazol-1-yl)-2-methyl-2-(methylamino)butanamide Using HRMS and NMR". Anal. Chem., 2017, 2392, 5415-5439.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2010, 1653, (8), 2330-2360.