Used primarily as an intermediate in organic synthesis, especially in pharmaceuticals and agrochemicals. It serves as a building block in cross-coupling reactions, such as Suzuki and Heck reactions, enabling the formation of carbon-carbon bonds. The iodine substituent is highly reactive, making it ideal for palladium-catalyzed transformations. It is also employed in the preparation of liquid crystals, dyes, and functionalized aromatic compounds for materials science research. Its ethyl group provides steric and electronic modulation, enhancing selectivity in synthetic pathways.