This chemical is widely used in the formulation of lipid nanoparticles, particularly in drug delivery systems. It serves as a key component in creating stable liposomes and micelles, which are essential for encapsulating and delivering therapeutic agents, such as mRNA vaccines and anticancer drugs. Its polyethylene glycol (PEG) moiety enhances the longevity of nanoparticles in the bloodstream by reducing recognition and clearance by the immune system, a process known as PEGylation. Additionally, it is utilized in targeted drug delivery to improve the specificity and efficiency of treatments, minimizing side effects. Its amphiphilic nature allows it to self-assemble into nanostructures, making it valuable in nanotechnology and biomedical research.