Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of indole-based drugs with biological activity. Commonly applied in the preparation of antitumor, antiviral, and antimicrobial agents due to its reactive aldehyde and nitro functional groups. Also employed in organic research for constructing complex heterocyclic systems through condensation and cyclization reactions. Its structure allows for further derivatization, making it valuable in medicinal chemistry and drug discovery.