Used in organic synthesis as an intermediate for pharmaceuticals and fine chemicals. Its α,β-unsaturated ester structure with a nitrile group allows participation in Michael additions and cycloaddition reactions, making it valuable in constructing heterocyclic compounds. Commonly employed in the development of active pharmaceutical ingredients (APIs), particularly in routes involving conjugated systems for antitumor and anti-inflammatory agents. Also utilized in polymer chemistry to modify resin properties due to its reactive vinyl and cyano functionalities.