Used as a key intermediate in the synthesis of agrochemicals and pharmaceuticals, particularly in the production of herbicides and fungicides due to its reactive halogenated aromatic structure. Its aldehyde group allows for easy functionalization, making it valuable in building complex organic molecules. Commonly employed in condensation reactions to form Schiff bases or in nucleophilic addition reactions for drug development. Also utilized in the preparation of dyes and specialty polymers where halogen atoms enhance thermal and chemical stability.