Figure 5: Representative 1D 1H STD HR/MAS NMR spectra of a) (R)-flurbiprofen, b) (S)-flurbiprofen in presence of the amylose-based CSP. All occurring analyte signals in this kind of spectrum show that they received magnetization during selective receptor saturation. The signal intensity of the STD spectrum decreased by more than 95% compared to the OFF-resonance spectrum. S=solvent (methanol).
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