Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of fluorinated and brominated aromatic compounds with biological activity. Its functional groups enable selective reactions for constructing complex molecules, especially in antitumor and antimicrobial agents. Also applied in agrochemicals for creating herbicides and pesticides due to its halogenated aromatic structure. The aldehyde group allows for easy modification into imines, oximes, or other derivatives useful in medicinal chemistry research.