Used in the synthesis of pharmaceutical intermediates, particularly in the development of antitubercular drugs. It serves as a key building block in the preparation of isoniazid derivatives, enhancing the efficacy and stability of active compounds. Its structure allows for easy functionalization, making it valuable in medicinal chemistry for optimizing drug candidates. Also employed in the production of agrochemicals and heterocyclic compounds due to its reactive carboxylic acid group and pyridine ring system.