Used as a key intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and fine chemicals. Its α,β-unsaturated ester structure makes it suitable for Michael addition reactions and other conjugate additions, enabling the construction of complex molecular frameworks. Commonly employed in the development of active pharmaceutical ingredients (APIs) where aromatic ester functionalities are required. Also utilized in the synthesis of UV-absorbing compounds and functional polymers due to its conjugated system and reactivity in polymerization processes.