Used in organic synthesis as a protected amine intermediate, particularly in the development of pharmaceuticals and agrochemicals. The ethynyl group allows for further functionalization via click chemistry, making it valuable in drug discovery and bioconjugation. The trifluoroacetate salt form enhances stability and solubility in polar solvents, facilitating its use in peptide coupling and heterocycle formation. Commonly employed in the preparation of kinase inhibitors and other bioactive molecules.