Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of nonsteroidal anti-inflammatory drugs (NSAIDs) and other bioactive molecules. Its dual carboxylic acid functionality allows for versatile chemical modifications, enabling the formation of amides, esters, and salts that are important in drug design. Commonly employed in coupling reactions to build complex aromatic structures with enhanced metabolic stability and target selectivity. Also utilized in the preparation of fluorinated analogs to improve pharmacokinetic properties such as membrane permeability and resistance to oxidative degradation.