发明人黄志刚,李文辉,钱学锋. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114233256 A, 授权公告日 2021-07-11.
发明人高志强,马晓峰,钱学锋. "Method for the Synthesis of 1-Methyl-5-(4-oxoquinazolin-3(4H)-yl)-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116071706 B, 授权公告日 2025-10-26.
发明人高志强,杨光,罗永刚. "A Process for Preparing High-Purity 1-Methyl-5-(4-oxoquinazolin-3(4H)-yl)-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114675399 A, 授权公告日 2023-09-18.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2016, 2025, (2), 7497-7511.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2024, 1930, 2570-2579.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 1-Methyl-5-(4-oxoquinazolin-3(4H)-yl)-1H-pyrazole-4-carboxylic acid Using HRMS and NMR". Food Chem., 2016, 1528, 8769-8777.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2012, 788, (10), 1001-1027.