发明人冯建国,胡光,徐明华. "Method for the Synthesis of Ethyl 5-amino-1-(2-hydroxy-2-phenylethyl)-1H-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 110488850 A, 授权公告日 2020-05-07.
发明人孙丽萍,何建平,胡光. "A Process for Preparing High-Purity Ethyl 5-amino-1-(2-hydroxy-2-phenylethyl)-1H-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 117543694 A, 授权公告日 2019-11-13.
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". Talanta, 2010, 1087, (10), 3562-3590.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2024, 1800, (5), 6498-6517.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5-amino-1-(2-hydroxy-2-phenylethyl)-1H-pyrazole-4-carboxylate Using HRMS and NMR". Chromatographia, 2019, 2048, (9), 2825-2840.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2013, 1459, 7372-7387.