Used primarily as an intermediate in organic synthesis, especially in the preparation of pharmaceuticals and fine chemicals. Its reactivity stems from the iodine atom, which facilitates nucleophilic substitution reactions, making it valuable in constructing complex molecular frameworks. Commonly employed in the development of ester-based prodrugs due to its ability to modify solubility and bioavailability. Also utilized in research settings for alkylating agents and in the synthesis of heterocyclic compounds.