In organosulfur chemistry, S-oxide may refer to:
S-oxides of disulfides, compounds with the linkage RSS(O)R. Several 1,2-dithiolanes form S-oxides. S-oxides of thioketones and thioaldehydes, compounds with the formula R2C=S=O and RCH=S=O, respectively. syn-Propanethial-S-oxide, a lacrymatory component of onion, is one example. sulfoxides, compounds with the formula R2SO, are sometimes referred to as S-oxides. Methionine-S-oxide reductase illustrates this nomenclature. Sulfur oxide refers to inorganic compounds with the formula SOx, especially sulfur dioxide and sulfur trioxide.
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