Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of active ingredients requiring halogenated aromatic structures. Its aldehyde and halogen functional groups allow for versatile chemical transformations, such as cross-coupling reactions and nucleophilic substitutions. Commonly employed in the production of herbicides, fungicides, and certain anti-inflammatory drugs. Also utilized in research for constructing complex organic molecules, including dyes and functional materials, where selective reactivity is essential.