1481447-40-8

Appearance: Dark blue solid
ex/em: 649/672 nm (PBS buffer)
Extinction coefficient (ε): 271000 L??mol??1??cm??1
Quantum yield (Φ): 0.28

Sulfo-Cy5-N3 is a click chemistry reagent containing an azide group. Cy5 is a red fluorescent label dye for imaging (Ex/Em=642/670 nm)[1]. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.

[1] An F, et al. Small ultra-red fluorescent protein nanoparticles as exogenous probes for noninvasive tumor imaging in vivo. Int J Biol Macromol. 2020 Jun 15;153:100-106. DOI:10.1016/j.ijbiomac.2020.02.253