Cy3 cadaverine is widely used in biological research as a fluorescent labeling agent. It is particularly valuable for tagging and visualizing biomolecules such as proteins, peptides, and nucleic acids in live cells or fixed tissues. Its bright fluorescence and photostability make it suitable for fluorescence microscopy, flow cytometry, and other imaging techniques. Researchers often use it to study cellular processes, including endocytosis, membrane dynamics, and intracellular transport. Additionally, it serves as a tool in drug discovery and development, enabling the tracking of drug delivery systems and their interactions with target cells. Its compatibility with various biological systems ensures its utility in diverse experimental setups.