. Author manuscript; available in PMC: 2009 Feb 1.

Published in final edited form as: J Am Soc Mass Spectrom. 2007 Nov 17;19(2):246–256. doi: 10.1016/j.jasms.2007.11.004

Table 1.

HPLC retention times of selected isomeric flavonoid glycosides

aglycon	linkage	saccharide^a	retention time (min)
quercetin	7-O-	Glc	8.19
quercetin	3-O-	Glc	9.04
quercetin	4′-O-	Glc	9.82
luteolin	7-O-	Glc	8.78
luteolin	4′-O-	Glc	10.09
quercetin	7-O-	GlcA	8.72
quercetin	3-O-	GlcA	9.28
quercetin	4′-O-	GlcA	10.46
quercetin	3′-O-	GlcA	11.32

Glc=glucose, GlcA=glucuronic acid