Lefèvre J P, Johansson L, Schröder R. "一种的合成方法" [P]. European Patent, EP 3374611 A1, 2019-11-07.
Anderson J P, Patel M V, Hughes D C. "Method for the Synthesis of 4-Ethyl 5-methyl pyridazine-4,5-dicarboxylate" [P]. US Patent, US 11505329 B2, 2022-10-18.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2017, 594, 401-413.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2022, 140, 3117-3132.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 4-Ethyl 5-methyl pyridazine-4,5-dicarboxylate Using HRMS and NMR". J. Pharm. Biomed. Anal., 2023, 752, (1), 3820-3837.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2019, 1203, 8452-8482.