Click-iT sDIBO Alkyne labels react with azides via a copper-free Click chemistry reaction to form a stable triazole linkage with an Alexa Fluor, Biotin, or label of your choice. Copper-free click reactions using our sDIBO alkynes are ideal for surface labeling of live cells; they also minimize damage to fluorescent proteins like GFP or R-PE. For intracellular labeling, the nonspecific binding of DIBO alkynes creates a background signal, and a labeling strategy using picolyl azides is the preferred solution in these instances.

Click chemistry-labeled molecules can be applied to complex biological samples and be detected with unprecedented sensitivity due to extremely low background. Macromolecules that have been azide-modified enzymatically, chemically, or metabolically can be labeled more easily, yielding more soluble bioconjugates with improved biological labeling utility.

To make a concentrated stock solution from 2–5 mM, dissolve the dye-alkyne in high quality anhydrous DMSO. Store frozen, desiccated, and protected from light. Click-iT SDP Ester sDIBO alkyne is susceptible to hydrolysis, so prepare the stock solution fresh on the day of the experiment.