Sørensen M, Schröder R, Jørgensen K. "Method for the Synthesis of 3-Bromo-8-chloro-[1,2,4]triazolo[4,3-a]pyrazine" [P]. European Patent, EP 3188221 A1, 2015-07-12.
Thompson G K, Stevens L M, Patel M V. "A Process for Preparing High-Purity 3-Bromo-8-chloro-[1,2,4]triazolo[4,3-a]pyrazine" [P]. US Patent, US 10457058 B2, 2018-10-28.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2012, 522, (4), 9124-9138.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2024, 841, 9267-9293.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 3-Bromo-8-chloro-[1,2,4]triazolo[4,3-a]pyrazine Using HRMS and NMR". Anal. Chem., 2018, 1497, 8194-8219.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2015, 853, 539-549.