Iridoids; aucubin, 3,4-dihydroaucubin, 6-O-b-glucosylaucubin,
catalpol
Flavonoids; apigenin, lutelin, scutellarin, baicalein, nepetin,
hispidulin, plantagoside
Miscellaneous; tannin, oleanolic acid, plant acids such as chlorogenic,
neochlorogenic, fumaric, hydroxycinnamic and benzoic acids and their
esters.
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