IR 750 Alkyne is a fluroescent molecule with a terminal propargyl group. The propargyl moiety in this linker can react with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry reaction. IR 750 Alkyne is a near-red, water-soluble dye that is structurally similar to other 750 dyes which absorbs at 756 nm and emits at 776 nm. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.