Used as a key intermediate in organic synthesis, particularly in the preparation of porphyrins and related macrocyclic compounds. Its dual aldehyde functionality allows for selective reactions, making it valuable in constructing complex heterocyclic systems for dyes, sensors, and pharmaceuticals. Also employed in the development of conductive polymers and organic semiconductors due to its aromatic and electron-rich structure. Commonly utilized in condensation reactions to form Schiff bases and other functionalized pyrrole derivatives with biological activity.