发明人高志强,何建平,冯建国. "Method for the Synthesis of Ethyl 7-oxo-3,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 114989856 A, 授权公告日 2023-05-04.
Brown S R, O'Brien P Q, Roberts E F. "A Process for Preparing High-Purity Ethyl 7-oxo-3,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate" [P]. US Patent, US 11745676 B2, 2018-06-22.
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". J. Agric. Food Chem., 2012, 1013, 148-155.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2021, 616, (10), 9775-9787.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 7-oxo-3,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate Using HRMS and NMR". J. Chromatogr. A, 2015, 1781, 3341-3370.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2022, 2140, 1782-1807.