Glycoside that occurs in the officinal extracts of Echinaceae angustifolia radix and Echinaceae purpureae radix (see also Echinacea). The molecule consists structurally of 2 moles of glucose and 1 mole of rhamnose, which are glycosidically bound to 2-(3,4-dihydroxyphenyl)ethanol and esterified with caffeic acid. The substance can be classified in the substance groups of carboxylic acid esters and phenols. .
The substance is said to have antibiotic, anti-inflammatory and immunostimulating effects