Spectral data analyses and structure elucidation of metoprolol tartrate

Abstract The infrared spectrum, ultraviolet spectrum, mass spectra, and nuclear magnetic resonance spectra of metoprolol tartrate, an antiarrhythmic medicine, were reported and interpreted comprehensively. The vibrations of functional groups in infrared spectrum, electron transitions in ultraviolet spectrum, and main characteristic fragmentations in mass spectra of metoprolol tartrate were discussed. All the 1 H and 13 C NMR chemical shifts were assigned by means of distoritionless enhancement by polarization transfer‐135 and ‐90, 1 H‐ 1 H correlation spectroscopy, and 13 C‐ 1 H correlation spectroscopy via short‐ and long‐range coupling. Copyright © 2011 John Wiley & Sons, Ltd.