Flamma® 496 PEG4-Alkyne

Flamma® Fluors 496 PEG4-alkyne is a copper (I)-catalyzed azide-alkyne cycloaddition (CuAAC) reagent of bright green dye induced from fluorescein structure and used to generate a stable fluorescence signal in bioimaging. The alkyne reactive group is connected to the dye through a tetraethylene glycol spacer. The maxima of Ex/Em values are at 496/520 nm, similar to that of Alexa 488 and Fluorescein. Flamma 496 might be excited using 488 nm laser line and displays excellent optical property. Flamma 496 PEG4-alkyne couples with an azide to form 1,4-disubstituted 1,2,3-triazole inside of living systems without interfering native biochemical processes. Prior to perform CuAAC, the azide functionality should be introduced onto counterpart biomolecule by means of chemical or genetic modification. We offer Flamma Fluors 496 PEG4-alkyne as a click chemistry reagent dye for cellular imaging and nucleotide functionalization.