Used as a key intermediate in the synthesis of biologically active compounds, particularly in pharmaceutical research. Its structure allows for selective functionalization, making it valuable in the development of kinase inhibitors and other targeted therapies. The aldehyde group enables further derivatization through reactions such as Wittig, reductive amination, or condensation, facilitating the creation of diverse compound libraries for drug discovery. Additionally, the iodine moiety supports cross-coupling reactions like Suzuki or Sonogashira, expanding its utility in building complex heterocyclic systems. Commonly employed in medicinal chemistry for optimizing lead compounds with improved potency and selectivity.