azido-tris(ethylenoxy)-L-alanine HCl Salt is a clickable amino acid derivative featuring a terminal azide group for copper-catalyzed or strain-promoted azide-alkyne cycloaddition (CuAAC/SPAAC) reactions. The water-soluble PEG3 spacer provides flexibility, while the L-alanine carboxylic acid enables bioconjugation to amine-containing biomolecules via standard coupling chemistry.
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