AbFluor™ dyes are a series of highly water-soluble fluorescent dyes spanning the visible and near-infrared spectrum for Labeling biomolecules, especially proteins and nucleic acids. AbFluor™ dyes bear the core structures of different fluorescent dye core structures that cover the fluorescence spectrum from UV to NIR. Innovative modifications to the core structure makes AbFluor™ dyes superior to other commercial dyes with many innovative novel features. AbFluor™ 770 is an unrivaled near-infrared dye with the ?Ex/?Em of 770/797 nm, exceptionally bright and stable, which is super alternative to DyLight 800. It is ideal for in vivo imaging, superior signal-to-noise for bioconjugates. It yields biologically more specific antibody conjugates and less background.