AFDye™ 546 Azide (Alexa Fluor® 546 Azide equivalent) is a bright, orange-fluorescent dye that reacts with terminal alkynes via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker. It also reacts with strained cyclooctyne via a copper-free click chemistry reaction to form a stable triazole and does not require Cu-catalyst or elevated temperatures.
Alexa Fluor 546 Azide is water-soluble, and pH-insensitive from pH 4 to pH 10 orange-fluorescent dye with absorption and emission maxima at 554 and 570 nm, respectively. It can be used with the 488 nm and 532 nm laser lines. AFDye™ 546 dye conjugated to a variety of antibodies, peptides, proteins, tracers, and amplification substrates often used for generation of stable signal in imaging and flow cytometry.
AFDye™ 546 dye structurally is identical to Alexa Fluor® 546 dye sold by ThermoFisher Scintific.