Theogallin is a trihydroxybenzoic acid glycoside, a type of polyphenolic compound found in tea[1] where it has been characterised as an umami enhancing compound.

[2] The compound can also be found in Arbutus unedo fruits.

[3] In rats, theogallin, or its metabolite quinic acid, can move through the blood brain barrier and can have cognition enhancing activities.

[4] This article about an aromatic compound is a stub.

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