Hexahydroxydiphenic acid
# Hexahydroxydiphenic acid

Hexahydroxydiphenic acid is an organic compound with the formula $[(HO)_3C_6HCO_2H]_2.$ It is the oxidatively coupled derivative of gallic acid It is a white solid, although samples are typically brown owing to oxidation.

Hexahydroxydiphenic acid is a component of some ellagitannins, such as casuarictin. Luteic acid is the monolactone and ellagic acid is the dilactone of hexahydroxydiphenic acid.

