发明人杨光,何建平,刘建华. "Method for the Synthesis of 5-(Ethoxycarbonyl)-1-methyl-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112948639 A, 授权公告日 2021-06-13.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2021, 1526, 7001-7029.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2011, 228, (11), 7087-7093.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 5-(Ethoxycarbonyl)-1-methyl-1H-pyrazole-4-carboxylic acid Using HRMS and NMR". Molecules, 2023, 1515, (8), 8459-8468.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2019, 1686, (1), 9191-9199.