Mueller T, O'Brien P Q, Johnson M A. "一种的合成方法" [P]. US Patent, US 11173415 B2, 2016-10-15.
发明人孙丽萍,郑宇鹏,黄志刚. "Method for the Synthesis of 1-Ethyl-4-hydroxy-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)quinolin-2(1H)-one" [P]. 中国发明专利, 专利号 CN 116130500 A, 授权公告日 2023-04-19.
发明人胡光,高志强,赵玉洁. "A Process for Preparing High-Purity 1-Ethyl-4-hydroxy-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)quinolin-2(1H)-one" [P]. 中国发明专利, 专利号 CN 117324880 B, 授权公告日 2024-09-03.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2021, 1631, (4), 2509-2515.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2021, 1850, (12), 6416-6440.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 1-Ethyl-4-hydroxy-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)quinolin-2(1H)-one Using HRMS and NMR". Anal. Chim. Acta, 2014, 1742, 3006-3015.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2016, 1916, (4), 8387-8410.