CF™680R succinimidyl ester (CF™680R SE) is a near-IR fluorescent dye with an amine-reactive group (i.e., succinimidyl ester group). CF™680R is a bright and exceptionally photostable near-IR dye. Although CF™680R is not as bright as our CF™680 dye, it is still among the brightest 680 nm dyes. However, the most important feature of CF™680R is its unrivaled photostability. This makes CF™680R ideal for applications that demand both brightness and photostability. CF™680R is not suitable for labeling streptavidin due to fluorescence quenching. Please download the CF™680R dye flyer for more details.