Chen K W, Brown S R, Lee S K. "一种的合成方法" [P]. US Patent, US 11260906 B2, 2025-05-23.
发明人徐明华,黄志刚,林芳. "Method for the Synthesis of 2,4-Dimethyl-5-(pyridin-4-yl)-1H-pyrazol-3(2H)-one" [P]. 中国发明专利, 专利号 CN 116439136 A, 授权公告日 2022-08-09.
发明人杨光,马晓峰,王建平. "A Process for Preparing High-Purity 2,4-Dimethyl-5-(pyridin-4-yl)-1H-pyrazol-3(2H)-one" [P]. 中国发明专利, 专利号 CN 110945981 A, 授权公告日 2025-09-14.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2014, 1129, (7), 6563-6569.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2023, 158, (12), 2957-2971.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 2,4-Dimethyl-5-(pyridin-4-yl)-1H-pyrazol-3(2H)-one Using HRMS and NMR". J. Agric. Food Chem., 2017, 1387, (2), 5360-5387.