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Table 2 Compounds assigned in the extracts of E. laurentii by HPLC-DAD and HPLC/ESI-MS

From: Lupinalbin A as the most potent estrogen receptor α- and aryl hydrocarbon receptor agonist in Eriosema laurentii de Wild. (Leguminosae)

Peak Rt (min) UV λmax(MeOH)(nm) Molecular formula Identification Class
a 11.89 257sh, 269, 349 C21H20O11 Isoorientin Flavone
b 14.08 270, 337 C21H20O10 Isovitexin Flavone
c 15.09 254, 348 C21H20O11 Luteolin-7-O-glucoside Flavone
d 15.69 260, 325sh C21H20O10 Genistin Isoflavone
e 28.89 258 C15H10O6 2′-hydroxygenistein Isoflavone
f 32.48 254, 266sh, 349 C15H10O6 Luteolin Flavone
g 33.60 255, 369 C15H10O7 Quercetin Flavonol
h 38.61 255, 357 C16H12O7 Quercetin-3-O-methylether Flavonol
i 43.85 260 C15H10O5 Genistein Isoflavone
j 51.22 256, 281,334 C15H8O6 Lupinalbin A Coumaronochromone