Roberts E F, Hughes D C, Mueller T. "一种的合成方法" [P]. US Patent, US 11144453 B2, 2015-08-15.
Brown S R, Johnson M A, Yamamoto T. "Method for the Synthesis of 4-Chloro-5-(difluoromethyl)-6-hydroxypyridine-2-sulfonyl chloride" [P]. US Patent, US 11907553 B2, 2019-08-06.
Kowalski A, Björnsson E, Martínez F. "A Process for Preparing High-Purity 4-Chloro-5-(difluoromethyl)-6-hydroxypyridine-2-sulfonyl chloride" [P]. European Patent, EP 3922956 A1, 2020-02-10.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2018, 980, (9), 9015-9031.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2013, 1674, (7), 41-52.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-5-(difluoromethyl)-6-hydroxypyridine-2-sulfonyl chloride Using HRMS and NMR". J. Nat. Prod., 2020, 2076, (4), 1803-1830.