Used in bioconjugation and drug delivery systems, this compound serves as a linker to connect molecules like drugs, peptides, or proteins to targeting agents or nanoparticles. Its PEG8 spacer enhances solubility and reduces immunogenicity, while the endo-BCN group enables efficient click chemistry reactions, particularly with azide-containing molecules. This makes it valuable in developing targeted therapies, diagnostic probes, and biomaterials for research and medical applications.