Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) where thiophene derivatives exhibit biological activity. Its protected amine group allows for selective reactions in multi-step organic syntheses, making it valuable in drug discovery and development. Commonly employed in the preparation of kinase inhibitors and other therapeutic agents requiring functionalized heterocyclic structures. Suitable for use in peptide coupling and solid-phase synthesis due to the carboxylic acid functionality, enabling attachment to various scaffolds.