Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of active ingredients for antihypertensive and antiviral drugs. Its structure allows for selective functionalization, making it valuable in creating complex organic molecules. Commonly employed in agrochemical research for designing novel pesticides and herbicides due to its halogenated aromatic framework. Also utilized in the production of specialty dyes and fluorescent probes, where the aldehyde group enables conjugation with other aromatic systems for enhanced optical properties.