发明人王建平,周伟,沈红梅. "Method for the Synthesis of 1-(6-Chloropyridazin-3-yl)-3-ethylurea" [P]. 中国发明专利, 专利号 CN 110756409 B, 授权公告日 2020-05-02.
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". J. Chromatogr. A, 2014, 2310, 2026-2052.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2021, 1074, (6), 2538-2542.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 1-(6-Chloropyridazin-3-yl)-3-ethylurea Using HRMS and NMR". J. Nat. Prod., 2015, 1015, (7), 7692-7695.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2016, 1059, (9), 32-44.