O'Brien P Q, Fischer A B, Mueller T. "Method for the Synthesis of 2-Oxo-4-(pyridin-4-yl)-1,2-dihydropyrimidine-5-carboxylic acid hydrate" [P]. US Patent, US 11912189 B2, 2016-04-11.
Mueller T, Thompson G K, Fischer A B. "A Process for Preparing High-Purity 2-Oxo-4-(pyridin-4-yl)-1,2-dihydropyrimidine-5-carboxylic acid hydrate" [P]. US Patent, US 9322937 B2, 2017-04-25.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2011, 1490, 5264-5288.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2020, 986, (12), 1368-1374.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 2-Oxo-4-(pyridin-4-yl)-1,2-dihydropyrimidine-5-carboxylic acid hydrate Using HRMS and NMR". Chromatographia, 2014, 820, (9), 5405-5418.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2025, 760, (8), 9866-9893.