Davis P L, Park J H, Stevens L M. "一种N/A的合成方法" [P]. US Patent, US 10542901 B2, 2021-07-24.
Nielsen H, Björnsson E, Lefèvre J P. "Method for the Synthesis of 5-Bromo-2-(difluoromethyl)-3-methylpyridine" [P]. European Patent, EP 3753988 A1, 2016-11-12.
Schröder R, Hughes D C, Anderson J P. "A Process for Preparing High-Purity 5-Bromo-2-(difluoromethyl)-3-methylpyridine" [P]. US Patent, US 11212750 B2, 2018-12-21.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Phytochemistry, 2014, 1991, 2830-2858.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Food Chem., 2019, 1738, (8), 5485-5497.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 5-Bromo-2-(difluoromethyl)-3-methylpyridine Using HRMS and NMR". Environ. Sci. Technol., 2023, 1028, (12), 2800-2822.