Organic derivatives of sulfonic acid in which the sulfo group is linked directly to carbon of an aryl group.
| Member | Definition | Role |
|---|
| 1,2-naphthoquinone-4-sulfonate | An arenesulfonic acid that is 1,2-naphthoquinone substituted at position 4 with a sulfonic acid group. Used principally as a reagent in colorimetric determinations. | 1,2-naphthoquinone-4-sulfonic acid |
| 1,3-dimethyl-2,4-dioxo-5-pyrimidinesulfonic acid phenyl ester | | 1,3-dimethyl-2,4-dioxo-5-pyrimidinesulfonic acid phenyl ester |
| 2,4-dinitrobenzenesulfonic acid | The arenesulfonic acid that is benzenesulfonic acid with two nitro substituents in the 2- and 4-positions. | 2,4-dinitrobenzenesulfonic acid |
| 4-chloromercuribenzenesulfonate | | p-chloromercuribenzenesulfonic acid |
| 4-hydroxy-3-methoxybenzene-1-sulfonic acid | An arenesulfonic acid that is guaiacol sulfated at position 4. Commonly used (in the form of its potassium salt) as an expectorant. | 4-hydroxy-3-methoxybenzene-1-sulfonic acid |
| 4-phenolsulfonic acid | An arenesulfonic acid that is phenol substituted by a sulfo group at C-4. | 4-hydroxybenzenesulfonic acid |
| 4-toluenesulfonic acid | An arenesulfonic acid that is benzenesulfonic acid in which the hydrogen at position 4 is replaced by a methyl group. | toluene-4-sulfonic acid |
| anthraquinone-2,6-disulfonate | A member of the class of anthraquinones that is 9,10-anthraquinone substituted at positions 2 and 6 by sulfo groups. | anthraquinone-2,6-disulfonic acid |
| azuletil | A member of the class of azulenes carrying sulfo, ethyl and isopropyl substituents at positions 1, 3 and 7 respectively. Used (in the form of its sodium salt) for treatment of gastric ulcers. | egualen |
| bathocuproine disulfonate | A phenanthroline that consists of 1,10-phenanthroline bearing two methyl groups at position 2 and 9 as well as two 4-sulfophenyl groups at positions 4 and 7. | bathocuproine disulfonic acid |
| ovex | | Chlorfenson |
| pyridoxal phosphate-6-azophenyl-2',4'-disulfonic acid | An arenesulfonic acid that is pyridoxal 5'-phosphate carrying an additional 2,4-disulfophenylazo substituent at position 6. | 5'-phosphopyridoxal-6-azobenzene-2,4-disulfonic acid |
| sulfosalicylic acid | An arenesulfonic acid that is benzoic acid substituted by a hydroxy at position C-2 and a sulfo group at C-5. | 5-sulfosalicylic acid |
| trinitrobenzenesulfonic acid | The arenesulfonic acid that is benzenesulfonic acid with three nitro substituents in the 2-, 4- and 6-positions. | 2,4,6-trinitrobenzenesulfonic acid |