Used in pharmaceutical research as a key intermediate for synthesizing targeted protein degraders, particularly PROTACs (Proteolysis Targeting Chimeras). It links E3 ligase ligands to target protein binders, enabling selective degradation of disease-related proteins. Its structure supports improved solubility and stability in cellular environments, making it valuable in developing drugs for cancer and inflammatory diseases. Commonly employed in medicinal chemistry for constructing bifunctional molecules with optimized linker properties.