Park J H, Thompson G K, Fischer A B. "一种的合成方法" [P]. US Patent, US 10926099 B2, 2024-10-17.
Kumar R, Park J H, Patel M V. "Method for the Synthesis of 4-(Difluoromethyl)-5-methoxy-2-(trifluoromethyl)nicotinic acid" [P]. US Patent, US 9862462 B2, 2021-06-18.
Nowak P, Johansson L, Björnsson E. "A Process for Preparing High-Purity 4-(Difluoromethyl)-5-methoxy-2-(trifluoromethyl)nicotinic acid" [P]. European Patent, EP 3077414 A1, 2022-06-18.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2023, 1389, (1), 6476-6480.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2010, 316, (12), 7317-7337.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 4-(Difluoromethyl)-5-methoxy-2-(trifluoromethyl)nicotinic acid Using HRMS and NMR". J. Agric. Food Chem., 2017, 1391, (7), 1654-1681.