Used primarily in pharmaceutical research, this compound functions as a PROTAC (Proteolysis Targeting Chimera) linker. It connects a target-binding ligand to an E3 ubiquitin ligase recruiter, enabling targeted protein degradation. Its structure allows selective degradation of disease-related proteins, making it valuable in oncology and inflammatory disease studies. The alkyne group provides a site for further conjugation via click chemistry, facilitating modular drug design and rapid compound optimization in drug discovery pipelines.