Chemistry
Chemical constituents of Galium aparine include: iridoid glycosides such as asperulosidic acid and 10-deacetylasperulosidic acid,asperuloside, monotropein and aucubin, alkaloids such as caffeine, phenolics such as phenolic acids, anthraquinone derivatives such as the aldehyde nordamnacanthal (1,3-dihydroxy-anthraquinone-2-al), flavonoids and coumarins, organic acids such as citric acid and a red dye.
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