Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) where protection of functional groups is required. The Boc-protected amine group allows for selective reactivity in multi-step organic syntheses, especially in peptide coupling and heterocycle formation. Its carboxylic acid functionality enables esterification or amide bond formation, making it valuable in constructing complex molecules for drug discovery. Commonly employed in the preparation of kinase inhibitors and other bioactive molecules in medicinal chemistry research.