Fischer A B, Davis P L, Stevens L M. "Method for the Synthesis of 2-(2-Chloro-4-(difluoromethyl)-6-methylpyridin-3-yl)acetic acid" [P]. US Patent, US 9925169 B2, 2018-02-03.
Chen K W, Klinger H, Fischer A B. "A Process for Preparing High-Purity 2-(2-Chloro-4-(difluoromethyl)-6-methylpyridin-3-yl)acetic acid" [P]. US Patent, US 11357430 B2, 2015-05-05.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2015, 1727, 8916-8928.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2016, 549, 47-61.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 2-(2-Chloro-4-(difluoromethyl)-6-methylpyridin-3-yl)acetic acid Using HRMS and NMR". Chemosphere, 2015, 142, 3211-3221.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2011, 2291, (4), 5132-5159.