Fmoc-L-Tyr (2-azidoethyl) -OH

Fmoc-L-Tyr (2-azidoethyl) -OH is a click chemistry reagent featuring an azido group. This synthetic derivative of tyrosine, protected by an Fmoc group, includes an azidoethyl substituent functioning as a reactive handle for dual orthogonal conjugation via Cu (I) -catalyzed 1,3-dipolar cycloaddition with alkynes. Additionally, the azido group can serve as an IR reporting molecule.