Used primarily as a chemical intermediate in organic synthesis, particularly in the development of pharmaceuticals and agrochemicals. Its cyclic sulfide structure makes it valuable in the preparation of sulfur-containing heterocyclic compounds, which are often found in bioactive molecules. It serves as a building block in the synthesis of certain drug candidates where the thiopyran ring can be further functionalized to enhance pharmacological activity. Additionally, it has been explored in materials science for designing specialty polymers with unique thermal or electronic properties due to the polarizable sulfur atom in the ring. Its reactivity allows for ring-opening or substitution reactions, enabling diverse molecular transformations in research settings.