发明人刘建华,唐晓军,王建平. "Method for the Synthesis of 2-(Difluoromethyl)-5-methoxy-3-nitropyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113102621 A, 授权公告日 2020-07-28.
发明人罗永刚,高志强,黄志刚. "A Process for Preparing High-Purity 2-(Difluoromethyl)-5-methoxy-3-nitropyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114563088 B, 授权公告日 2022-12-25.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2015, 1655, (8), 8387-8415.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2018, 1390, (8), 7587-7597.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 2-(Difluoromethyl)-5-methoxy-3-nitropyridine-6-carboxylic acid Using HRMS and NMR". Phytochemistry, 2022, 2392, (6), 5229-5253.