Used in bioconjugation and targeted drug delivery systems, this PEGylated phospholipid enables the functionalization of liposomes and nanoparticles. The cyanur group acts as a reactive handle for coupling biomolecules such as antibodies, peptides, or proteins, allowing specific targeting to cells or tissues. Its PEG spacer enhances solubility, prolongs circulation time in vivo, and reduces immune recognition. Commonly applied in the development of diagnostic imaging agents and therapeutic nanocarriers, especially in cancer research. Also utilized in surface modification of nanomaterials for biosensing and molecular imaging due to the stable linkage formed through the cyanuric chloride chemistry.