Chen K W, Hughes D C, Kumar R. "Method for the Synthesis of 4-({[3-(Methoxymethyl)-5-oxo-1,5-dihydro-4H-pyrazol-4-yliden]methyl}amino)-N,N-dimethylbenzenesulfonamide" [P]. US Patent, US 9261506 B2, 2022-06-20.
发明人冯建国,郭海燕,高志强. "A Process for Preparing High-Purity 4-({[3-(Methoxymethyl)-5-oxo-1,5-dihydro-4H-pyrazol-4-yliden]methyl}amino)-N,N-dimethylbenzenesulfonamide" [P]. 中国发明专利, 专利号 CN 111064399 A, 授权公告日 2021-11-23.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2022, 1518, 2197-2223.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2012, 2061, (1), 6354-6357.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 4-({[3-(Methoxymethyl)-5-oxo-1,5-dihydro-4H-pyrazol-4-yliden]methyl}amino)-N,N-dimethylbenzenesulfonamide Using HRMS and NMR". J. Nat. Prod., 2020, 1389, (12), 3110-3132.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2025, 1875, 349-352.