Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of fluorinated active pharmaceutical ingredients (APIs) where the fluorine atom enhances metabolic stability and bioavailability. The aldehyde and carboxylic acid functional groups allow for versatile chemical modifications, enabling coupling reactions, ring formations, and derivatizations in drug discovery. Commonly employed in the preparation of protease inhibitors and kinase inhibitors. Also utilized in the construction of complex organic molecules for agrochemicals and functional materials due to its reactive handles and structural rigidity.