Monoclonal anti-GFP is designed to detect enhanced GFP and GFP containing recombinant proteins. This product is prepared by labeling high quality monoclonal mouse anti-GFP IgG (H+L) with with the far red fluorescent dye CF™660R. CF™660R absorbs at 663 nm but can still be sufficiently excited by the 633 or 635 nm laser with emission at 682 nm in the borderline spectral region between far-red and near-IR fluorescence. CF™660R is significantly brighter than the spectrally similar Alexa Fluor® 660. More importantly, CF™660R is extremely photostable, making the dye ideal for confocal microscopy.