Dibutyl sulfoxide is primarily used as a solvent in various chemical reactions and industrial processes due to its ability to dissolve a wide range of organic and inorganic compounds. It is particularly valued in the synthesis of pharmaceuticals, where it facilitates the production of active pharmaceutical ingredients by enhancing reaction efficiency and selectivity. In the field of organic chemistry, it serves as a versatile reagent for oxidation reactions, often yielding high-purity products. Additionally, it finds application in the formulation of specialty chemicals, including coatings and adhesives, where it improves solubility and stability. Its unique properties also make it useful in research and development for studying reaction mechanisms and material properties.