MB 660R NHS Ester

MB 660R NHS Ester is a fluorescent reagent characterized by a terminal NHS ester group. This far-red fluorescent dye has a peak absorption wavelength of 665 nm and an emission wavelength of 690 nm. The NHS ester can be utilized for labeling primary amines (-NH2) on proteins, amine-modified oligonucleotides, and other amine-containing molecules.