Roberts E F, Anderson J P, Brown S R. "Method for the Synthesis of 4-Fluoro-3-[(imidazo[1,2-a]pyrazine-3-carbonyl)-amino]benzoic acid" [P]. US Patent, US 10271797 B2, 2021-07-17.
发明人郭海燕,林芳,刘建华. "A Process for Preparing High-Purity 4-Fluoro-3-[(imidazo[1,2-a]pyrazine-3-carbonyl)-amino]benzoic acid" [P]. 中国发明专利, 专利号 CN 116995200 B, 授权公告日 2021-10-17.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2015, 179, (10), 1888-1896.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2010, 1097, (10), 4536-4547.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 4-Fluoro-3-[(imidazo[1,2-a]pyrazine-3-carbonyl)-amino]benzoic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2011, 206, (8), 2183-2206.