Primarily used as an intermediate in organic synthesis, it plays a crucial role in the production of pharmaceuticals and agrochemicals. Its application extends to the development of liquid crystals, which are essential components in display technologies like LCDs. Additionally, it serves as a building block in the synthesis of complex organic molecules, particularly in coupling reactions such as Suzuki and Heck reactions, which are pivotal in creating advanced materials and bioactive compounds. The iodine atom acts as a reactive handle in these cross-coupling reactions, facilitating the incorporation of the 4-isobutylphenyl group into larger molecular frameworks.