Nielsen H, Jørgensen K, Johansson L. "Method for the Synthesis of ethyl 4-amino-2-methylpyrrolo[2,1-f][1,2,4]triazine-6-carboxylate" [P]. European Patent, EP 3374682 A1, 2017-10-01.
Nielsen H, Nowak P, Schröder R. "A Process for Preparing High-Purity ethyl 4-amino-2-methylpyrrolo[2,1-f][1,2,4]triazine-6-carboxylate" [P]. European Patent, EP 3966647 A1, 2022-12-08.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2012, 1000, (11), 850-869.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2021, 534, 5948-5955.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of ethyl 4-amino-2-methylpyrrolo[2,1-f][1,2,4]triazine-6-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2011, 989, (4), 2871-2899.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2015, 1070, (9), 1322-1335.