Used as an intermediate in the synthesis of pharmaceuticals and functional materials, particularly in the development of pyrrole-based bioactive compounds. Its aldehyde and carboxylic acid functional groups allow for diverse chemical modifications, making it valuable in medicinal chemistry for constructing heterocyclic systems. It is also employed in the preparation of ligands for metal-catalyzed reactions and in the design of organic semiconductors due to the electron-rich nature of the pyrrole ring.