发明人黄志刚,李文辉,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111576885 A, 授权公告日 2022-08-11.
发明人杨光,李文辉,王建平. "Method for the Synthesis of 1,3-Bis[(4-nitrophenyl)amino]urea" [P]. 中国发明专利, 专利号 CN 117561587 B, 授权公告日 2019-09-12.
发明人朱建伟,杨光,刘建华. "A Process for Preparing High-Purity 1,3-Bis[(4-nitrophenyl)amino]urea" [P]. 中国发明专利, 专利号 CN 117731685 B, 授权公告日 2021-11-23.
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". J. Sep. Sci., 2012, 512, (12), 7538-7544.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2021, 386, (7), 7670-7688.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 1,3-Bis[(4-nitrophenyl)amino]urea Using HRMS and NMR". J. Chromatogr. A, 2016, 2245, 7931-7951.