Trihydroxybenzenes

The trihydroxybenzenes (or benzenetriols) are organic compounds with the formula C6H3(OH)3. Also classified as polyphenols, they feature three hydroxyl groups substituted onto a benzene ring. They are white solids with modest solubility in water.


 * {| class="wikitable"

! Pyrogallol ! Hydroxyquinol ! Phloroglucinol
 * Benzene-1,2,3-triol
 * Benzene-1,2,4-triol
 * Benzene-1,3,5-triol
 * Pyrogallol2.svg
 * Hydroxyhydrochinon.svg
 * Phloroglucinol structure.png
 * }
 * Phloroglucinol structure.png
 * }

The enzyme pyrogallol hydroxytransferase uses benzene-1,2,3,5-tetrol and benzene-1,2,3-triol (pyrogallol), whereas its two products are benzene-1,3,5-triol (phloroglucinol) and benzene-1,2,3,5-tetrol. This enzyme can be found in Pelobacter acidigallici.