Hughes D C, Mueller T, Schröder R. "Method for the Synthesis of 6-(Difluoromethyl)-2-methoxy-5-nitronicotinic acid" [P]. US Patent, US 10372784 B2, 2020-01-27.
发明人李文辉,何建平,冯建国. "A Process for Preparing High-Purity 6-(Difluoromethyl)-2-methoxy-5-nitronicotinic acid" [P]. 中国发明专利, 专利号 CN 117314753 A, 授权公告日 2024-06-13.
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". Talanta, 2010, 2354, 6877-6883.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2019, 1317, 4865-4891.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 6-(Difluoromethyl)-2-methoxy-5-nitronicotinic acid Using HRMS and NMR". Anal. Chem., 2014, 538, 1771-1800.