Table 3

High-resolution eletrospray ionization mass spectrometry (HRESI-MS) data of Quercetin, Arctigenin, Chlorogenic acid, and Caffeic acid identified in the hydroethanolic extract of Arctium lappa root

Compound

Molecular Formule

Calculated [M-H]- mass

Experimental [M-H]- mass

E (ppm)


Quercetin

C15H10O7

301.0348

301.0293

18.27

Arctigenin

C21H2406

371.1495

371.1542

12.66

Chlorogenic acid

C16H18O9

353.0872

353.0896

6.80

Caffeic acid

C9H8O4

179.0344

179.0305

21.78


Predes et al. BMC Complementary and Alternative Medicine 2011 11:25   doi:10.1186/1472-6882-11-25

Open Data