Used primarily as an intermediate in organic synthesis, especially in the preparation of pharmaceuticals and biologically active compounds. It is commonly employed to introduce the nicotinoyl group into molecules, facilitating the formation of amides and esters in drug development processes. Its reactivity makes it valuable in synthesizing derivatives of niacin (vitamin B3) and in creating compounds with potential metabolic or neurological activity. Also utilized in the production of agrochemicals and specialty polymers where pyridine-based structures are required.