This compound is primarily utilized in the field of targeted protein degradation, particularly in the development of PROTACs (Proteolysis Targeting Chimeras). It serves as a crucial linker component that connects the target protein-binding moiety to the E3 ubiquitin ligase-recruiting moiety, facilitating the ubiquitination and subsequent degradation of specific proteins. Its application is significant in cancer research, where it aids in the selective elimination of disease-causing proteins. Additionally, it is employed in chemical biology studies to explore protein function and validate drug targets. The PEG1 spacer in the structure enhances solubility and stability, making it suitable for in vitro and in vivo experiments.