Alkyne reacts with azide to form 1,2,3-triazole by copper(I) catalyzed 1,3-dipolar Huisgen cycloaddition. It can also be used as a monomer to copolymerize with other monomers to form fluorescent polymers.Cyanine 555 is structurally identical to Cy3 from GE Healthcare.
Source:
Synthetic
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