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(a) HPLC-ESI-MS chromatogram of G. gelida herb extract in SIM-mode (m/z 755). (b) UV spectra of compounds 47 and 68. (c) MS and MS2 spectra (negative ionization) of compound 68. Api-C-Hex-O-Hex-O-Hex—apigenin-C-hexoside-O-hexoside-O-hexoside (isovitexin-2″,4″-di-O- glucoside), Api-C-Hex-O-Hex-O-Caf—zone of isomeric apigenin-C-hexoside-O-hexoside-O-caffeates.
