Williams B T, O'Brien P Q, Stevens L M. "一种的合成方法" [P]. US Patent, US 11077151 B2, 2019-01-16.
发明人马晓峰,朱建伟,钱学锋. "Method for the Synthesis of (4-Oxo-1,4-dihydropyrimido[1,2-a]benzimidazol-2-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 111426373 B, 授权公告日 2017-11-11.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2010, 1093, (9), 4749-4756.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2016, 1289, 7140-7164.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of (4-Oxo-1,4-dihydropyrimido[1,2-a]benzimidazol-2-yl)acetic acid Using HRMS and NMR". Chemosphere, 2021, 1472, (4), 2976-2982.