2-Iodotoluene is primarily used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It serves as a building block for coupling reactions, such as Suzuki and Heck reactions, which are essential for creating complex organic molecules. Additionally, it is employed in the synthesis of dyes and pigments due to its ability to introduce iodine into aromatic systems. In research, it is utilized as a reagent for studying reaction mechanisms and developing new synthetic methodologies. Its role in cross-coupling reactions makes it valuable in the manufacture of fine chemicals and active pharmaceutical ingredients (APIs).