Schröder R, Johansson L, Nowak P. "一种的合成方法" [P]. European Patent, EP 3343922 A1, 2023-02-20.
Patel M V, Mueller T, Hughes D C. "Method for the Synthesis of N3-ethylpyrazine-2,3-diamine" [P]. US Patent, US 11064928 B2, 2017-02-12.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2016, 1249, (11), 3032-3044.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2024, 101, (10), 4144-4150.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of N3-ethylpyrazine-2,3-diamine Using HRMS and NMR". Talanta, 2013, 790, 8661-8671.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2020, 709, (8), 5463-5486.