Used as a key reagent in organic synthesis, particularly in the construction of carbon-carbon double bonds through the Horner-Wadsworth-Emmons (HWE) reaction. It enables the selective formation of alkenes from aldehydes, offering good stereocontrol and yield. The dithiane group acts as a masked carbonyl equivalent, allowing for umpolung strategies in multi-step synthesis. This compound is especially valuable in the preparation of complex molecules such as natural products and pharmaceuticals where precise alkene geometry is required. Its stability and reactivity profile make it suitable for use in both academic and industrial research settings.