Used primarily as a chemical intermediate in the synthesis of pharmaceuticals and agrochemicals. It plays a key role in the production of certain antihistamines and nonsteroidal anti-inflammatory drugs (NSAIDs) due to its reactive carbonyl and chlorinated aromatic structure. Also employed in the preparation of specialty chemicals, including UV absorbers and dyes. Its electrophilic nature makes it valuable in organic transformations such as Friedel-Crafts acylation and nucleophilic substitution reactions. Handle with care due to potential irritant properties.