Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) for central nervous system (CNS) drugs and antidepressants. Its functional groups allow for selective coupling reactions, making it valuable in constructing complex aromatic frameworks. Commonly employed in Suzuki and Negishi cross-coupling reactions to form biaryl structures. Also utilized in agrochemical research for designing novel herbicides and fungicides due to its halogenated aromatic backbone. The aldehyde group enables further derivatization, such as reductive amination or oxime formation, supporting its role in medicinal chemistry and drug discovery.