Used as an intermediate in the synthesis of non-steroidal anti-inflammatory drugs (NSAIDs), particularly in the development of pyrazolone derivatives with analgesic and antipyretic properties. It plays a key role in medicinal chemistry for designing compounds that modulate cyclooxygenase (COX) enzyme activity. Also utilized in research for developing new anti-arthritic agents and in the preparation of derivatives for structure-activity relationship (SAR) studies. Its carboxylic acid functionality allows for easy conjugation or salt formation to improve solubility and bioavailability in pharmaceutical formulations.