Cy7 cadaverine is widely used in biomedical research as a fluorescent labeling agent. Its near-infrared fluorescence properties make it particularly useful for in vivo imaging, allowing researchers to track and visualize biological processes in real time with minimal background interference. It is commonly employed to label proteins, peptides, and antibodies, enabling the study of cellular uptake, distribution, and targeting mechanisms. Additionally, Cy7 cadaverine is utilized in the development of diagnostic tools and therapeutic agents, as its fluorescence can help monitor drug delivery and efficacy in preclinical models. Its stability and high sensitivity also make it a valuable tool in molecular imaging and fluorescence microscopy.