Used as a key intermediate in the synthesis of pharmaceuticals and biologically active compounds, particularly in the development of indole-based drugs. Its structure supports the construction of complex heterocyclic systems found in medicinal chemistry. Commonly employed in research settings for the preparation of serotonin receptor ligands and other neuroactive agents. Also utilized in the production of dyes and fluorescent probes due to the inherent aromatic and electron-rich nature of the indole core. Suitable for use in organic synthesis where ester groups allow for further functionalization through hydrolysis, reduction, or coupling reactions.