Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the production of nicotinamide-based drugs and kinase inhibitors. It serves as a building block in agrochemicals for developing herbicides and insecticides due to its reactive aldehyde and chlorine groups. Also employed in the preparation of functionalized pyridine derivatives used in materials science, including organic semiconductors and ligands for catalysis. Its selective reactivity makes it valuable in multi-step organic synthesis for introducing substituted nicotinyl moieties.