发明人李文辉,张德明,杨光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113134367 A, 授权公告日 2016-03-23.
发明人陈志强,张德明,沈红梅. "Method for the Synthesis of Ethyl 5-amino-4-bromo-1-(2-cyanoethyl)-1H-pyrazole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 115783785 B, 授权公告日 2024-09-03.
Klinger H, Kumar R, Brown S R. "A Process for Preparing High-Purity Ethyl 5-amino-4-bromo-1-(2-cyanoethyl)-1H-pyrazole-3-carboxylate" [P]. US Patent, US 11873617 B2, 2021-08-10.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2019, 933, (8), 4267-4273.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2015, 654, 4809-4821.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5-amino-4-bromo-1-(2-cyanoethyl)-1H-pyrazole-3-carboxylate Using HRMS and NMR". Molecules, 2016, 2100, 668-676.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2010, 1162, 9818-9848.