Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the production of active pharmaceutical ingredients (APIs) involving heterocyclic compounds. It serves as a building block in condensation reactions due to its α,β-unsaturated ester structure, enabling the formation of nitrogen-containing rings such as pyridines and pyrimidines. Commonly employed in the development of antiviral, anticancer, and anti-inflammatory agents. Also utilized in agrochemical synthesis for creating novel pesticides and herbicides. Its reactivity makes it suitable for Michael addition reactions and in multicomponent reactions to rapidly assemble complex molecules.