发明人何建平,郭海燕,刘建华. "Method for the Synthesis of (S)-4-Bromo-1-(2,2-difluorocyclopropyl)-5-methyl-1H-pyrazole" [P]. 中国发明专利, 专利号 CN 108680763 A, 授权公告日 2017-03-28.
发明人郑宇鹏,高志强,王建平. "A Process for Preparing High-Purity (S)-4-Bromo-1-(2,2-difluorocyclopropyl)-5-methyl-1H-pyrazole" [P]. 中国发明专利, 专利号 CN 111994467 B, 授权公告日 2015-09-08.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2020, 2310, 2136-2152.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2013, 107, (9), 2850-2876.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of (S)-4-Bromo-1-(2,2-difluorocyclopropyl)-5-methyl-1H-pyrazole Using HRMS and NMR". J. Pharm. Biomed. Anal., 2021, 2058, (12), 3095-3114.