Used in the synthesis of pharmaceutical intermediates, particularly in antitubercular drugs like isoniazid derivatives. Acts as a building block in organic synthesis for creating nitrogen-containing heterocyclic compounds. Employed in the development of metal-organic frameworks (MOFs) due to its ability to chelate metal ions through both carboxylic acid and pyridine functionalities. Also utilized in the preparation of fluorescent probes and sensors owing to its aldehyde group, which allows for further functionalization. Shows potential in medicinal chemistry for designing enzyme inhibitors.