Kumar R, Klinger H, Hughes D C. "一种的合成方法" [P]. US Patent, US 11312513 B2, 2019-09-22.
Davis P L, Stevens L M, Johnson M A. "Method for the Synthesis of 4-(Difluoromethyl)-6-hydroxy-5-nitropyridine-3-sulfonyl chloride" [P]. US Patent, US 9605344 B2, 2018-12-11.
发明人刘建华,高志强,杨光. "A Process for Preparing High-Purity 4-(Difluoromethyl)-6-hydroxy-5-nitropyridine-3-sulfonyl chloride" [P]. 中国发明专利, 专利号 CN 108488695 B, 授权公告日 2020-08-24.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2023, 511, 3893-3904.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2021, 1090, (12), 7564-7594.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 4-(Difluoromethyl)-6-hydroxy-5-nitropyridine-3-sulfonyl chloride Using HRMS and NMR". J. Chromatogr. A, 2015, 487, (11), 4777-4784.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2022, 1991, 9661-9677.