Patel M V, Johnson M A, Hughes D C. "一种的合成方法" [P]. US Patent, US 11461741 B2, 2016-09-12.
发明人郭海燕,张德明,周伟. "Method for the Synthesis of 1-Ethyl-2-methyl-N-(6-methylpyridin-2-yl)-4-oxo-1,4-dihydroquinoline-6-carboxamide" [P]. 中国发明专利, 专利号 CN 115808267 B, 授权公告日 2022-07-03.
发明人高志强,朱建伟,郭海燕. "A Process for Preparing High-Purity 1-Ethyl-2-methyl-N-(6-methylpyridin-2-yl)-4-oxo-1,4-dihydroquinoline-6-carboxamide" [P]. 中国发明专利, 专利号 CN 109285642 A, 授权公告日 2021-08-03.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2016, 2238, 7917-7926.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2012, 969, 3340-3370.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 1-Ethyl-2-methyl-N-(6-methylpyridin-2-yl)-4-oxo-1,4-dihydroquinoline-6-carboxamide Using HRMS and NMR". Anal. Chim. Acta, 2024, 489, 3455-3468.