2-Iodofuran-3-carboxylic acid is primarily utilized in organic synthesis as a versatile building block for the construction of more complex molecules. Its iodine substituent makes it a valuable intermediate in cross-coupling reactions, such as Suzuki or Sonogashira couplings, which are widely employed in pharmaceutical and materials science research. The carboxylic acid group allows for further functionalization, enabling the creation of esters, amides, or other derivatives. This compound is particularly useful in the development of heterocyclic compounds, which are often found in bioactive molecules, including drugs and agrochemicals. Additionally, its furan ring structure contributes to its role in the synthesis of natural product analogs and functional materials.