2,5-Dihydroxy-4-sulfo-4'-methyldiphenylsulfone, sel de sodium [French] 51579-72-7 Benzenesulfonic acid, 2,5-dihydroxy-4-((4-methylphenyl)sulfonyl)-, monosodium salt Monosodium 2,5-dihydroxy-4-((4-methylphenyl)sulfonyl)benzenesulfonate