Mueller T, Roberts E F, Stevens L M. "一种的合成方法" [P]. US Patent, US 11266529 B2, 2021-11-17.
Lee S K, Chen K W, Yamamoto T. "Method for the Synthesis of Ethyl 5-amino-1-(2-methylphenyl)-1H-pyrazole-4-carboxylate" [P]. US Patent, US 10173930 B2, 2019-07-27.
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, 2019, 786, 3754-3782.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2017, 763, 3680-3710.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5-amino-1-(2-methylphenyl)-1H-pyrazole-4-carboxylate Using HRMS and NMR". Biomed. Chromatogr., 2013, 1807, 878-906.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2017, 2014, 8728-8745.