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Xanthohumol (XN), a prenylated chalcone isolated from the hop plant. (A) Schematic drawing of a female hop cone that is composed of a central spine: the strig, bracteoles, bracts, and the characteristic lupulin glands that are tiny yellow sacs containing the hop oils. (B) Chemical structure of xanthohumol (3′-[3,3-dimethylallyl]-2′,4′,4-trihydroxy-6′-methoxychalcone).
