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 functional groups allow for selective modifications in multi-step organic reactions, making it valuable in constructing complex molecules. Also employed in the preparation of agrochemicals, including herbicides and fungicides, due to its reactivity and structural compatibility with bioactive compounds. Additionally, it serves as a building block in the production of specialty polymers and dyes where halogenated aromatic aldehydes enhance thermal stability and electronic properties.