Figure 2.
Molecular ion region of electrospray ionization mass spectra of: (a) glucoerucin [m/z 420, (M−H)−]; (b) glucobrassicin [m/z 447, (M−H)−]; (c) 4-methoxy glucobrassicin and neoglucobrassicin [m/z 477, (M−H)−].
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