Park J H, Klinger H, Lee S K. "Method for the Synthesis of Methyl 6-amino-1-ethyl-2-oxo-1,2-dihydropyrimidine-5-carboxylate" [P]. US Patent, US 11878421 B2, 2020-05-28.
Schröder R, Mueller T, Klinger H. "A Process for Preparing High-Purity Methyl 6-amino-1-ethyl-2-oxo-1,2-dihydropyrimidine-5-carboxylate" [P]. US Patent, US 11015570 B2, 2025-05-10.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2020, 748, (2), 4250-4267.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2023, 2295, (8), 5303-5332.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 6-amino-1-ethyl-2-oxo-1,2-dihydropyrimidine-5-carboxylate Using HRMS and NMR". Chromatographia, 2016, 2256, (8), 1761-1771.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2022, 1651, 3684-3704.