Lee S K, Brown S R, Schröder R. "一种的合成方法" [P]. US Patent, US 11051021 B2, 2025-10-19.
Anderson J P, Schröder R, Lee S K. "Method for the Synthesis of 2-(Difluoromethyl)-4-methoxy-3-nitropyridine-6-carboxylic acid" [P]. US Patent, US 9341159 B2, 2018-09-02.
发明人徐明华,钱学锋,陈志强. "A Process for Preparing High-Purity 2-(Difluoromethyl)-4-methoxy-3-nitropyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111264372 A, 授权公告日 2015-03-01.
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". Anal. Chem., 2016, 270, 1254-1280.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2025, 1151, (1), 8708-8715.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 2-(Difluoromethyl)-4-methoxy-3-nitropyridine-6-carboxylic acid Using HRMS and NMR". Molecules, 2023, 1571, 2787-2817.