Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of proteolysis-targeting chimeras (PROTACs). It serves as a linker component that connects target protein ligands to E3 ubiquitin ligase ligands, enabling targeted protein degradation within cells. Its structure allows for stable conjugation and optimal spatial orientation, enhancing the efficiency and specificity of the PROTAC molecules. Also employed in research settings for studying protein function and degradation pathways in cellular models.