Kumar R, Johnson M A, Thompson G K. "Method for the Synthesis of N-Desisopropyl Metoprolol" [P]. US Patent, US 9140337 B2, 2015-01-25.
Williams B T, Brown S R, Mueller T. "A Process for Preparing High-Purity N-Desisopropyl Metoprolol" [P]. US Patent, US 10688213 B2, 2025-10-08.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2018, 579, (3), 6153-6168.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2024, 1635, (1), 3489-3511.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of N-Desisopropyl Metoprolol Using HRMS and NMR". J. Pharm. Biomed. Anal., 2011, 921, (5), 4192-4196.