Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the production of active pharmaceutical ingredients (APIs) for antimicrobial and anti-inflammatory agents. Its structure allows for selective functionalization, making it valuable in building complex organic molecules. Commonly employed in agrochemicals for the development of herbicides and fungicides due to its halogenated aromatic framework. Also utilized in research and development of specialty chemicals, including dyes and fluorescent probes, where the aldehyde group enables coupling reactions for molecular extension.