Used primarily as an intermediate in the synthesis of non-steroidal anti-inflammatory drugs (NSAIDs), particularly in the production of diclofenac. It serves as a key building block due to the presence of both carboxylic acid and acetylated phenolic functionalities, enabling selective chemical modifications. Its chlorinated aromatic structure facilitates further substitution reactions, making it valuable in pharmaceutical manufacturing. Also employed in the development of derivatives for biological activity screening in medicinal chemistry research.