Rossi M, Kowalski A, Lefèvre J P. "Method for the Synthesis of 3-Amino-6-(methylamino)pyrazine-2,5-dicarbonitrile" [P]. European Patent, EP 3776285 A1, 2022-04-18.
Martínez F, Nielsen H, Jørgensen K. "A Process for Preparing High-Purity 3-Amino-6-(methylamino)pyrazine-2,5-dicarbonitrile" [P]. European Patent, EP 3465728 A1, 2024-05-02.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2010, 509, (4), 7972-7987.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2010, 542, (10), 8498-8517.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 3-Amino-6-(methylamino)pyrazine-2,5-dicarbonitrile Using HRMS and NMR". Biomed. Chromatogr., 2017, 511, 8408-8422.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2024, 1361, (5), 4024-4034.