发明人冯建国,陈志强,杨光. "Method for the Synthesis of Ethyl 1-(4-aminophenyl)-5-methyl-1h-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 108975306 B, 授权公告日 2018-03-28.
发明人王建平,何建平,陈志强. "A Process for Preparing High-Purity Ethyl 1-(4-aminophenyl)-5-methyl-1h-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 113672322 B, 授权公告日 2021-09-17.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2014, 2263, (8), 4267-4276.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2019, 1181, 4431-4457.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 1-(4-aminophenyl)-5-methyl-1h-pyrazole-4-carboxylate Using HRMS and NMR". J. Pharm. Biomed. Anal., 2014, 1524, (6), 3372-3381.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2015, 1466, 2495-2519.