File:FunktionelleGruppen_Sulfonsäure.svg · Wikimedia Commons · See Wikimedia Commons
sulfonic acid
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organic compound with the structure R−S(=O)₂−OH
Research
97,790 papers- Sulfonic acid: key drug design elements with potent, broad-ranging pharmacological activities.Future medicinal chemistry · 2023
- Sulfonic Acid Derivatives in the Production of Stable Co-Amorphous Systems for Solubility Enhancement.Journal of pharmaceutical sciences · 2022
- Sulfonic Acid-Containing Flavonoids from the Roots of Phyllanthus acidus.Journal of natural products · 2018
- Sulfonic acid functionalized β zeolite as efficient bifunctional solid acid catalysts for the synthesis of 5-hydroxymethylfurfural from cellulose.International journal of biological macromolecules · 2023
- Safety assessment of xylene sulfonic acid, toluene sulfonic acid, and alkyl aryl sulfonate hydrotropes as used in cosmetics.International journal of toxicology · 2011
via PubMed
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Encyclopedic overview
General structure of a sulfonic acid with the functional group indicated in blue
In organic chemistry, sulfonic acid (or sulphonic acid) refers to a member of the class of organosulfur compounds with the general formula R−S(=O)2−OH, where R is an organic alkyl or aryl group and the S(=O)2(OH) group a sulfonyl hydroxide. A sulfonic acid can be thought of as sulfuric acid with one hydroxyl group replaced by an organic substituent. The parent compound (with the organic substituent replaced by hydrogen) is the parent sulfonic acid, HS(=O)2(OH), a tautomer of sulfurous acid, S(=O)(OH)2. Salts or esters of sulfonic acids are called sulfonates.
Excerpted from Wikipedia’s “sulfonic acid” article, available under the CC BY-SA 4.0 licence.