发明人李文辉,徐明华,孙丽萍. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109463499 A, 授权公告日 2023-10-22.
Martínez F, Johansson L, Björnsson E. "Method for the Synthesis of 2423-84-9
Pyrazine 1,4-Dioxide
Pyrazine Di-N-oxide
Pyrazine Dioxide
Pyrazine N,N'-Dioxide" [P]. European Patent, EP 3606005 A1, 2022-07-26.
发明人林芳,李文辉,胡光. "A Process for Preparing High-Purity 2423-84-9
Pyrazine 1,4-Dioxide
Pyrazine Di-N-oxide
Pyrazine Dioxide
Pyrazine N,N'-Dioxide" [P]. 中国发明专利, 专利号 CN 116566094 A, 授权公告日 2023-06-25.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2018, 1183, 4294-4315.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2011, 2014, 8453-8467.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 2423-84-9
Pyrazine 1,4-Dioxide
Pyrazine Di-N-oxide
Pyrazine Dioxide
Pyrazine N,N'-Dioxide Using HRMS and NMR". J. Agric. Food Chem., 2023, 1596, (11), 5083-5092.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2022, 1057, 9949-9958.