Oxetan-2-ylmethyl 4-methylbenzenesulfonate is primarily utilized in organic synthesis as a versatile reagent for introducing the oxetane functional group into various molecular structures. Its application is particularly significant in the development of pharmaceuticals, where oxetane rings are valued for their ability to enhance metabolic stability and bioavailability of drug candidates. The compound is also employed in the synthesis of advanced materials, such as polymers and resins, where the oxetane group can improve mechanical properties and chemical resistance. Additionally, it serves as a key intermediate in the preparation of complex organic molecules, enabling the construction of diverse chemical architectures in research and industrial settings.