More polar phenolic compounds elute first under reverse phase chromatographic conditions as glycosylation of flavonoids increases their polarity. Therefore, triglycosides elute before diglycosides, followed by monoglycosides and aglycones. For flavonoid aglycones, the elution order is typically dependent on the number of polar hydroxyl groups and therefore the expected elution order for flavonols is myricetin, followed by quercetin, and kaempferol. Acylation and methylation of flavonoids have the opposite effect and increase the retention times for flavonoids (Cuyckens & Claeys, 2004).