1,2,3,5-Tetrahydroxybenzene

1,2,3,5-Tetrahydroxybenzene is a benzenetetrol.

It is a metabolite in the degradation of 3,4,5-trihydroxybenzoate (gallic acid) by Eubacterium oxidoreducens.

The enzyme pyrogallol hydroxytransferase uses 1,2,3,5-tetrahydroxybenzene and 1,2,3-trihydroxybenzene (pyrogallol), whereas its two products are 1,3,5-trihydroxybenzene (phloroglucinol) and 1,2,3,5-tetrahydroxybenzene.

Uses
1,2,3,5-Tetrahydroxybenzene, also known as pyrogallol, has various uses. It is used in the production of certain dyes, photographic developers, and hair dyes. Additionally, pyrogallol has been employed in traditional medicine and some cosmetic formulations due to its antioxidant properties.