BODIPY 505/515 is widely used as a fluorescent dye in biological research due to its high photostability and bright fluorescence. It is particularly effective in cell imaging and flow cytometry, where it helps in tracking and analyzing cellular processes. The dye is also utilized in studying lipid membranes and lipid droplets, providing insights into lipid metabolism and storage. Additionally, it serves as a marker in environmental studies to monitor microbial activity in various ecosystems. Its applications extend to material science, where it is used in the development of fluorescent sensors and optoelectronic devices.