Used as an intermediate in the synthesis of non-steroidal anti-inflammatory drugs (NSAIDs), particularly in the production of indomethacin and related compounds. It plays a key role in constructing the core structure of these pharmaceuticals due to its ability to form substituted indole derivatives. Also utilized in research for developing new analgesic and anti-inflammatory agents. Its reactivity allows for functionalization in multi-step organic syntheses, making it valuable in medicinal chemistry and drug development.