Fluorescein-6-isothiocyanate is a fluorescent dye widely used in biomedicine for various applications. It is commonly employed for labeling proteins, antibodies, and other biomolecules for visualization and tracking purposes in biological research. Additionally, this product is utilized in immunofluorescence assays and flow cytometry to detect and analyze specific markers and antigens. Its unique properties make it a valuable tool in the study of drug delivery, cell imaging, and disease diagnosis.