Used as a key intermediate in the synthesis of nicotinamide adenine dinucleotide (NAD) analogs, which are important in biochemical research and drug development. Serves as a precursor in the preparation of ionic liquids for catalysis and electrochemical applications due to its stable pyridinium core and good solubility. Employed in the development of enzyme inhibitors and coenzyme mimics, particularly in studies related to dehydrogenase enzymes. Also utilized in the formulation of pharmaceutical salts where the iodide counterion enhances crystallinity and stability.