Klinger H, O'Brien P Q, Park J H. "一种的合成方法" [P]. US Patent, US 9562618 B2, 2023-04-18.
Johansson L, Nielsen H, Mueller T C. "Method for the Synthesis of 1,3-Bis(6-methylpyridin-2-yl)urea" [P]. European Patent, EP 3610823 A1, 2022-12-11.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2020, 274, (10), 4020-4045.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2018, 1565, 3048-3064.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 1,3-Bis(6-methylpyridin-2-yl)urea Using HRMS and NMR". Anal. Chem., 2020, 1741, (3), 265-279.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2019, 2089, (11), 1203-1217.