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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