Hydroquinone sulfonic acid,potassium salt, Hydroquinonesulfonate potassium salt, hydroquinone-2-sulfonic acid potassium salt, Potassium 2,5-dihydroxybenzenesulfonate, Potassium Hydroquinonesulfonate, 2,5-Dihydroxybenzenesulfonic Acid Potassium Salt, Hydroquinonesulfonic Acid Potassium Salt, 2,5-dihydroxybenzene sulfonic acid potassium salt, Benzenesulfonic acid,2,5-dihydroxy-,monopotassium salt, Hydroquinone Sulfonic Acid Potassium Salt, potassium hydroguinone sulphonate, hydroquinonesulfonic acid,potassium salt