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Related to sulfonic acid: Sulfinic acid
sul·fon·ic ac·id(sŭl-fon'ik as'id),
Any of the compounds in which a hydrogen atom of a CH group is replaced by the sulfonic acid group, -SO3H; general formula: R-SO3H.
Synonym(s): sulfoacid (2)
sul·fon·ic ac·id(sŭl-fon'ik as'id)
Any of the organic compounds having the general formula SO2OH, derived from sulfuric acid by replacement of a hydrogen atom.
See also: acid