Johnson M A, Kumar R, Brown S R. "Method for the Synthesis of 2-Cyano-6-(difluoromethyl)-4-methylnicotinic acid" [P]. US Patent, US 11675987 B2, 2023-05-17.
Nowak P, Björnsson E, Lefèvre J P. "A Process for Preparing High-Purity 2-Cyano-6-(difluoromethyl)-4-methylnicotinic acid" [P]. European Patent, EP 3600665 A1, 2024-02-25.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2018, 731, 4914-4940.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2023, 911, 1501-1514.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 2-Cyano-6-(difluoromethyl)-4-methylnicotinic acid Using HRMS and NMR". Food Chem., 2024, 2316, (3), 1053-1069.