Used as a reagent in organic synthesis, particularly in the preparation of pharmaceuticals and fine chemicals. It serves as an alkylating agent in the formation of nitrogen-containing compounds. Commonly applied in the development of active pharmaceutical ingredients (APIs) where amine functionality is required. Also utilized in research laboratories for derivatization of carboxylic acids and other acidic compounds to form amides, aiding in purification or analysis. Its iodide salt form enhances stability and handling in moisture-sensitive reactions.