Used in organic synthesis as a building block for pharmaceuticals and bioactive molecules. Its alkyne group enables click chemistry reactions, particularly Cu(I)-catalyzed azide-alkyne cycloaddition, making it valuable in drug discovery and bioconjugation. The carboxylic acid and amide functionalities allow further derivatization, useful in peptide-like structures and heterocycle synthesis. Also applied in materials science for creating functionalized polymers or probes for biochemical labeling.