Alexa Fluor® 488, 532, 546, 555, 568, Cy3, TAMRA and ROX dyes.nnSY-7 DBCO reacts with azides via a copper-free “click chemistry” reaction to form a stable triazole and does not require Cu-catalyst or elevated temperatures. In application where the presence of copper is a concern SY-7 DBCO is an ideal alternative to copper requiring fluorescent alkynes.nnQSY®-7 is registered trademarks of ThermoFisher Scientific.