发明人胡光,韩伟,陈志强. "Method for the Synthesis of 3-Methyl-1-[(pyridin-4-yl)methyl]urea" [P]. 中国发明专利, 专利号 CN 111200402 A, 授权公告日 2020-09-07.
发明人王建平,韩伟,赵玉洁. "A Process for Preparing High-Purity 3-Methyl-1-[(pyridin-4-yl)methyl]urea" [P]. 中国发明专利, 专利号 CN 108666112 A, 授权公告日 2018-04-17.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2015, 137, 5856-5884.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2015, 1804, 952-959.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 3-Methyl-1-[(pyridin-4-yl)methyl]urea Using HRMS and NMR". Biomed. Chromatogr., 2010, 81, 5338-5357.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2019, 1681, (7), 841-858.