Cy7.5-PEG-DSPE (MW 1000) is a phospholipid that incorporates CY7.5 dye, utilized for labeling proteins/nucleic acids and fluorescence microscopy. This compound can self-assemble in aqueous solutions to form micelles or lipid bilayers, and is employed in the creation of liposomes or nanoparticles for delivering nutrients, such as mRNA or DNA vaccines (Ex/Em = 770/820 nm).