Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other biologically active molecules. Its aldehyde functional group allows for easy modification through condensation or reduction reactions, enabling the construction of complex heterocyclic structures. Commonly employed in medicinal chemistry for building indole-based scaffolds, which are prevalent in drugs targeting cancer, inflammation, and neurological disorders. The BOC-protected amine ensures selective reactivity, making it valuable in multi-step organic syntheses where controlled deprotection and coupling are required.