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Table 4 [M-H], MS2, MS3, and MS4 data of acylated-mono-C-glycosyl flavone, when the position of acylation is set to 2″-O in the sugar in Flickingeria fimbriata

From: Identification of C-glycosyl flavones by high performance liquid chromatography electrospray ionization mass spectrometry and quantification of five main C-glycosyl flavones in Flickingeria fimbriata

Peak No. Rt (min) Compounds Molecular formula [M-H] MS2 (m/z)a MS3 (m/z) MS4 (m/z)
− 120 − 90 -Acidb -Acid-120 [(Ag-H+42)-18] [(Ag-H+72)-18] [Ag-H+42-28]
11 28.81 Apig-8-C-(2″-O-ρ-coum)-β-d-glu C30H26O12 577 457 (7) 487 (0.6) 413 (100) 293 (26) 293 (100) 323 (0.7) 265 (49)
12 29.07 Apig-6-C-(2″-O-ρ-coum)-β-d-glu C30H26O12 577 457 (8) 487 (0.9) 413 (100) 293 (60) 293 (100) 323 (1.4) 265 (62)
  1. Main observed fragments. Other ions were found but they have not been included
  2. Apig, Apigenin; glu, glucoside; ρ-coum, ρ-coumaroyl
  3. aAg: aglycone. apigenin (Ag = 270); chrysoeriol (Ag = 300)
  4. b-Acid: ρ-coumaric acid (− 164 Da)