发明人钱学锋,孙丽萍,陈志强. "一种1-(4-吡啶基)-1H-吡唑-4-羧酸乙酯的合成方法" [P]. 中国发明专利, 专利号 CN 109074174 A, 授权公告日 2015-10-03.
Nielsen H, Kowalski A, Martínez F. "Method for the Synthesis of Ethyl 1-(pyridin-4-yl)-1H-pyrazole-4-carboxylate" [P]. European Patent, EP 3908259 A1, 2022-10-16.
发明人沈红梅,周伟,马晓峰. "A Process for Preparing High-Purity Ethyl 1-(pyridin-4-yl)-1H-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 116223934 B, 授权公告日 2016-11-21.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of 1-(4-吡啶基)-1H-吡唑-4-羧酸乙酯 in Pharmaceutical Formulations". Talanta, 2020, 118, (9), 3960-3976.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-(4-吡啶基)-1H-吡唑-4-羧酸乙酯 as an Impurity". J. Nat. Prod., 2010, 1377, 147-169.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 1-(pyridin-4-yl)-1H-pyrazole-4-carboxylate Using HRMS and NMR". J. Chromatogr. A, 2011, 1375, (3), 9189-9218.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate 1-(4-吡啶基)-1H-吡唑-4-羧酸乙酯 Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2016, 1013, 1475-1503.