Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) for drugs targeting central nervous system disorders and anti-inflammatory agents. Its structure allows for selective functionalization, making it valuable in constructing complex aromatic frameworks in medicinal chemistry. Also employed in the preparation of agrochemicals, including herbicides and fungicides, due to its ability to enhance bioactivity. Commonly utilized in cross-coupling reactions such as Suzuki and Heck reactions to form carbon-carbon bonds in advanced organic synthesis. Its halogen and aldehyde functional groups provide dual reactivity, enabling sequential transformations in multi-step synthetic routes.