Björnsson E, Schröder R, Martínez F. "Method for the Synthesis of 2-(1-Methyl-1h-pyrazol-4-yl)pyrimidine-4-carboxylic acid" [P]. European Patent, EP 3172822 A1, 2019-01-02.
发明人何建平,林芳,孙丽萍. "A Process for Preparing High-Purity 2-(1-Methyl-1h-pyrazol-4-yl)pyrimidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109410593 A, 授权公告日 2025-12-01.
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". Molecules, 2014, 1480, 8090-8094.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2020, 1420, (5), 5729-5743.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 2-(1-Methyl-1h-pyrazol-4-yl)pyrimidine-4-carboxylic acid Using HRMS and NMR". J. Agric. Food Chem., 2024, 395, (3), 8603-8615.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2015, 660, (9), 4983-4988.