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Table 3 [M-H], MS2, MS3, and MS4 data of non-acylated di-C-glycosyl flavones 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] (m/z) MS2 (m/z)a MS3 (m/z) MS4 (m/z)
− 120 − 90 − 60 [Ag-H+84] [Ag-H+114] [Ag-H+84] [Ag-H+114] [Ag-H+56] [Ag-H+28] [Ag-H+28-15]
1 17.70 Vicenin-II C27H30O15 593 473 (100) 503 (31) 353 (60) 383 (31) 353 (100) 383 (12) 325 (75) 297 (100)
3 20.71 Vicenin-I C26H28O14 563 443 (61) 473 (100) 503 (60) 353 (83) 383 (56) 353 (100) 383 (9) 325 (70) 297 (100)
4 22.10 Schaftoside C26H28O14 563 443 (100) 473 (65) 503 (5) 353 (74) 383 (45) 353 (100) 383 (20) 325 (81) 297 (100)
5 22.53 Isoschaftoside C26H28O14 563 443 (84) 473 (100) 503 (69) 353 (93) 383 (97) 353 (100) 383 (19) 325(58) 297 (100)
9 25.30 Vicenin-III C26H28O14 563 443 (100) 473 (61) 503 (3) 353 (46) 383 (32) 353 (100) 383 (13) 325 (97) 297 (100)
2 19.15 Chrys-6,8-di-C-β-d-glu C28H32O16 623 503 (100) 533 (18) 383 (68) 413 (30) 383 (100) 413 (28) 355 (29) 327 (8) 312 (100)
6 22.70 Chrys-6-C-β-d-xyl-8-C-β-d-glu C27H30O15 593 473 (100) 503 (41) 533 (26) 383 (87) 413 (50) 383 (100) 413 (44) 355 (51) 327 (2) 312 (100)
7 23.72 Chrys-6-C-β-d-glu-8-C-α-l-ara C27H30O15 593 473 (100) 503 (36) 533 (28) 383 (71) 413 (55) 383 (100) 413 (46) 355 (32) 327 (4) 312 (100)
8 24.65 Chrys-6-C-α-l-ara-8-C-β-d-glu C27H30O15 593 473 (90) 503 (100) 533 (5) 383 (85) 413 (36) 383 (93) 413 (100) 355 (15) 327 (7) 312 (100)
10b 26.79 Chrys-6-C-β-d-glu-8-C-β-d-xyl C27H30O15 593 473 (77) 503 (74) 533 (8) 383 (100) 413 (47) 383 (100, MS2) 413 (45, MS2) 355 (3, MS2) 327 (4, MS3) 312 (100, MS3)
  1. Main observed fragments. Other ions were found, but they have not been included
  2. Chrys chrysoeriol, glu glucose, ara arabinoside, xyl xyloside
  3. aAg: aglycone, apigenin (Ag = 270); chrysoeriol (Ag = 300)
  4. bMS2 and MS3 in bracket means the ions were obtained in MS2 and MS3, respectively