2-Iodo-3,5-dimethylpyrazine is primarily utilized as a key intermediate in the synthesis of flavoring agents, where it contributes to the development of compounds that impart a roasted, nutty aroma to food products. It is also employed in pharmaceutical research and development, particularly for the creation of novel compounds with potential therapeutic properties. Additionally, it serves as an important building block in organic synthesis, facilitating the production of complex molecules for various research and industrial applications.