Sulfenic acid

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Sulfenic acids exhibit tautomerism, with the structure on the left predominating

A sulfenic acid is an organosulfur compound and oxoacid with the general formula RSOH, where R ≠ H. Sulfenic acids are generally unstable. An example of a sulfenic acid is benzenesulfenic acid, PhSOH.

The prefix sulfenic in organic nomenclature denotes the RS group (R≠H), for instance an arylsulfenylpyrrole Ar-S-Py ^[1].

Sulfenic acids are produced by the enzymatic decomposition of allicin and related compounds following tissue damage to garlic, onions, and other plants of the Allium genus.

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