Used in research as a fluorescent probe for studying protein interactions and cellular uptake mechanisms due to its strong fluorescence and ability to penetrate cell membranes. Its structure allows conjugation with biomolecules, making it useful in imaging and tracking biological processes at the cellular level. Also explored for use in assays detecting enzyme activity, particularly proteases, where cleavage of the ester bond releases the fluorescent moiety. Shows potential in drug delivery studies because of its lysine-based ester linkage, which can be designed to release active compounds under specific physiological conditions.