IR 650 Alkyne is a fluroescent agent with a terminal propargyl group. The alkyne in this linker can react with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry reaction. IR 650 Alkyne very hydrophilic, water-soluble far-red fluorescent dye that has a maximal absorption of 651 nm and emission at 668 nm. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.