Used as a key intermediate in the synthesis of non-steroidal anti-inflammatory drugs (NSAIDs), particularly in the production of anthranilic acid derivatives with analgesic and anti-inflammatory properties. It serves as a building block in medicinal chemistry for developing compounds that inhibit cyclooxygenase (COX) enzymes. Also employed in the preparation of fluorescent probes and sensors due to its ability to form rigid, conjugated structures upon derivatization. Its carboxylic acid groups allow for easy functionalization, making it useful in peptide coupling and polymer modification applications.