Used in organic synthesis as a key intermediate for the development of pharmaceuticals, particularly in the creation of β-lactam antibiotics. Its structure is valuable for constructing complex molecules due to the presence of both azetidine and ethynyl groups, which enable diverse chemical transformations. Applied in medicinal chemistry research for designing compounds with potential biological activity, such as enzyme inhibitors or antimicrobial agents. Also explored in material science for synthesizing novel polymers or functionalized materials. Its tosyl group enhances reactivity, making it useful in various coupling reactions and cross-coupling processes.