Williams B T, Brown S R, Park J H. "Method for the Synthesis of Phenothiazine Impurity 6" [P]. US Patent, US 10310203 B2, 2019-12-13.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2019, 1964, 2544-2568.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2013, 1223, 6789-6819.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Phenothiazine Impurity 6 Using HRMS and NMR". J. Chromatogr. A, 2021, 808, 1851-1874.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2011, 217, 6967-6982.