Adamantyl iodide is primarily used in organic synthesis as a building block for more complex molecules. Its rigid adamantane structure makes it valuable in the development of pharmaceuticals, particularly in creating compounds with enhanced stability and bioavailability. It is also employed in materials science for designing polymers and coatings with specific properties, such as thermal stability and resistance to degradation. Additionally, adamantyl iodide serves as a precursor in the synthesis of adamantyl derivatives, which are used in research for studying molecular interactions and developing new chemical entities.