Used as a key intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its structure allows for easy functionalization, making it valuable in constructing complex molecules. Commonly employed in the synthesis of gamma-aminobutyric acid (GABA) analogs and other bioactive compounds. Also utilized in the preparation of specialty polymers and dyes due to its reactive cyano and ester groups. Its versatility in Michael addition and cyclization reactions enhances its role in developing heterocyclic compounds.