APDye Fluors is the equivalent fluorescent dye of alexa fluors developed by axispharm. APDye Fluors series fluorescent dyes are bright in color, optically stable, very good in light stability of dyeing brightness, and very competitive in price. It can be applied to the labeling and localization of tissues, cells and biomolecules in biomedical research. Its excitation and emission spectra cover most of the visible and part of the infrared spectral region and are suitable for most fluorescence microscopes.