MB 594 NHS Ester is a fluroescent agent with a terminal NHS ester group. MB 594 NHS ester very hydrophilic, water-soluble red fluorescent dye that has a maximal absorption of 605 nm and emission at 635 nm. The compound is also pH insensitivity from pH 3 to pH 10. The NHS ester can be applied to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.