Hydroxybenzoquinone

A hydroxybenzoquinone (formula: C
6H
4O
3) is any of several organic compounds that can be viewed as derivatives of a benzoquinone through replacement of one hydrogen atom (H) by an hydroxyl group (-OH).

In general, the term may mean any benzoquinone derivative where any number n of hydrogens have been replaced by n hydroxyls, so that the formula is C
6H
4O
2+n. In this case the number n (which is between 1 and 4) is indicated by a multiplier prefix (mono-, di-, tri-, tetra-, penta-, or hexa-).