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A mass spectrometric method based on the combined use of electrospray ionization, collision-induced dissociation and tandem mass spectrometry at high mass resolution has been applied to an investigation of the structural characterization of genistein-7-O-β-d-glucoside (5,7,4'-trihydroxyisoflavone). The product ion mass spectrum of [M-H] - ions shows neutral losses of the glycan residue (162Da)...
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