Product Description: CY7-N3 (Sulfo-Cyanine7-N3) is a water-soluble NIR dye azide for Click Chemistry. 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.