This chemical is widely used in the development of drug delivery systems, particularly in the creation of liposomal formulations. It serves as a key component in targeted therapy, enabling the encapsulation and controlled release of therapeutic agents. The polyethylene glycol (PEG) moiety enhances the stability and longevity of the liposomes in the bloodstream, reducing uptake by the immune system. The carboxyfluorescein tag allows for easy tracking and visualization of the liposomes in biological systems, making it valuable for research and diagnostic applications. Additionally, it is utilized in studies involving cell membrane interactions, nanoparticle engineering, and fluorescence-based imaging techniques. Its amphiphilic nature makes it suitable for forming micelles or vesicles, further expanding its utility in nanotechnology and biomedical research.