1,1',3,3,3',3'-Hexamethylindotricarbocyanine iodide is a highly potent fluorescent dye widely utilized in biomedical research and proves invaluable for cell labeling and monitoring, as well as tracking cellular processes in real-time. This remarkable dye showcases exceptional aptitude in investigating mitochondrial function and dynamics. Furthermore, it boasts an ability to detect and precisely identify specific proteins and organelles residing within cells. Its diverse applications extend to dissecting ailments like cancer, neurodegenerative disorders, and even cardiovascular diseases.