Resorcinol is an aromatic organic compound with the formula C6H4(OH)2. It is a white granular solid. It is a hydroxybenzene, a derivative of benzene, consisting of two hydroxyl groups. It is a precursor to numerous other chemical compounds. It is also known as m-dihydroxybenzene, 1.3-dihydroxybenzene, resorcin, and resorcinol.