Used in pharmaceutical research as an intermediate in the synthesis of bioactive compounds, particularly in the development of indole-based drugs targeting neurological and inflammatory conditions. Its nitro group allows for further chemical modifications, making it valuable in creating diverse molecular structures for drug discovery. Also employed in the preparation of fluorescent probes and dyes due to the indole scaffold’s favorable optical properties. Commonly utilized in medicinal chemistry for structure-activity relationship (SAR) studies involving serotonin receptor ligands and kinase inhibitors.