Williams B T, Yamamoto T, Roberts E F. "一种的合成方法" [P]. US Patent, US 10926091 B2, 2016-05-22.
Mueller T, Schröder R, O'Brien P Q. "Method for the Synthesis of 2,2-Difluoro-2-(6-fluoro-2-methyl-2H-indazol-5-yl)acetohydrazide" [P]. US Patent, US 10206200 B2, 2019-12-14.
发明人黄志刚,林芳,沈红梅. "A Process for Preparing High-Purity 2,2-Difluoro-2-(6-fluoro-2-methyl-2H-indazol-5-yl)acetohydrazide" [P]. 中国发明专利, 专利号 CN 110635955 A, 授权公告日 2018-11-11.
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". Sci. Total Environ., 2023, 1362, 4137-4165.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2012, 1430, 6837-6845.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 2,2-Difluoro-2-(6-fluoro-2-methyl-2H-indazol-5-yl)acetohydrazide Using HRMS and NMR". Molecules, 2015, 1133, (4), 6487-6515.