Hughes D C, Johnson M A, Stevens L M. "一种的合成方法" [P]. US Patent, US 9594408 B2, 2015-07-25.
Davis P L, Thompson G K, Johnson M A. "Method for the Synthesis of 2-Chloro-5-fluoro-6-methylnicotinic acid methyl ester" [P]. US Patent, US 11940620 B2, 2025-03-03.
Williams B T, Fischer A B, Mueller T. "A Process for Preparing High-Purity 2-Chloro-5-fluoro-6-methylnicotinic acid methyl ester" [P]. US Patent, US 10900939 B2, 2025-02-11.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2022, 601, (11), 1235-1238.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2016, 728, 7786-7798.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 2-Chloro-5-fluoro-6-methylnicotinic acid methyl ester Using HRMS and NMR". J. Pharm. Biomed. Anal., 2018, 1229, (12), 191-202.