Used primarily in biochemical and pharmaceutical research as a PROTAC (proteolysis-targeting chimera) linker component. It enables targeted protein degradation by connecting an E3 ubiquitin ligase ligand to a protein-binding moiety, facilitating the ubiquitination and subsequent degradation of specific disease-related proteins. Commonly applied in the development of novel therapeutics for cancer, inflammatory diseases, and neurodegenerative disorders. Its structure supports enhanced solubility and cellular permeability, making it suitable for in vitro and in vivo studies. Also utilized in the design of molecular glues and bifunctional degraders to improve selectivity and potency in drug discovery.