Used in organic synthesis as a key intermediate for pharmaceuticals and fine chemicals. Its α,β-unsaturated ester structure makes it suitable for Michael addition reactions and conjugate additions, especially in the development of active pharmaceutical ingredients (APIs). Commonly employed in the preparation of tyrosine kinase inhibitors and other biologically active compounds due to the presence of the aniline moiety. Also utilized in polymer chemistry to modify resin properties and in the design of specialty monomers for functional polymers. Its reactivity allows for easy functionalization, making it valuable in medicinal chemistry research and development.