发明人韩伟,沈红梅,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117936511 A, 授权公告日 2015-04-17.
Kumar R, O'Brien P Q, Patel M V. "Method for the Synthesis of Isobutylidene Diurea(Secondary Standards traceble to USP)" [P]. US Patent, US 9433221 B2, 2021-10-15.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2016, 1639, (6), 2978-2995.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2012, 524, (2), 7535-7551.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of Isobutylidene Diurea(Secondary Standards traceble to USP) Using HRMS and NMR". J. Agric. Food Chem., 2015, 1992, (6), 2734-2764.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2018, 1640, (12), 7291-7300.