Brown S R, Davis P L, Kumar R. "Method for the Synthesis of 4-(Difluoromethyl)-5-nitro-2-(trifluoromethyl)pyridin-3-ol" [P]. US Patent, US 11222662 B2, 2017-11-18.
Lefèvre J P, Martínez F, Jørgensen K. "A Process for Preparing High-Purity 4-(Difluoromethyl)-5-nitro-2-(trifluoromethyl)pyridin-3-ol" [P]. European Patent, EP 3345083 A1, 2016-05-13.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2023, 581, (5), 5330-5340.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2014, 342, 2544-2548.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 4-(Difluoromethyl)-5-nitro-2-(trifluoromethyl)pyridin-3-ol Using HRMS and NMR". Anal. Chim. Acta, 2019, 503, 6822-6840.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2012, 994, 3877-3890.