Used in organic synthesis as an intermediate for pharmaceuticals, particularly in the development of antiviral and anticancer agents. The iodine atom allows for further functionalization via cross-coupling reactions, making it valuable in medicinal chemistry. Also employed in the preparation of radiolabeled compounds for research and imaging due to the presence of iodine, which can be substituted with radioactive isotopes. Its methyl group enhances lipophilicity, aiding in cell membrane penetration for biological studies.