Brown S R, Roberts E F, Hughes D C. "一种N/A的合成方法" [P]. US Patent, US 11179377 B2, 2023-02-05.
发明人李文辉,唐晓军,钱学锋. "Method for the Synthesis of 7-Chloro-1,8-naphthyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112340330 B, 授权公告日 2017-09-21.
发明人沈红梅,高志强,刘建华. "A Process for Preparing High-Purity 7-Chloro-1,8-naphthyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116538870 A, 授权公告日 2015-02-19.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Biomed. Chromatogr., 2011, 1713, (6), 6864-6891.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Environ. Sci. Technol., 2019, 1618, 9175-9199.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 7-Chloro-1,8-naphthyridine-3-carboxylic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2016, 1521, 8030-8041.