sodium 2,5-dihydroxybenzenesulphonate, 2,5-Dihydroxybenzenesulfonic acid,monosodium salt, 2,5-dihydroxy-benzenesulfonic acid,sodium-salt, Benzenesulfonic acid,2,5-dihydroxy-,sodium salt, Sodium hydroquinone monosulfonate, sodium 2,5-dihydroxybenzenesulfonate, sodium hydroquinone sulfonate, 2,5-Dihydroxy-benzolsulfonsaeure,Natrium-Salz, 2,4-DIHYDRO-5-METHYL-2-(4-NITROPHENYL)-3H-PYRAZOL-3-ONE, EINECS 233-016-3