(E)-Cinnamyl 3-aminobut-2-enoate is primarily utilized in the synthesis of various organic compounds, particularly in the development of pharmaceuticals and bioactive molecules. Its structure, featuring both cinnamyl and amino groups, makes it a valuable intermediate in creating compounds with potential therapeutic properties. It is often employed in the preparation of derivatives that exhibit antimicrobial, anti-inflammatory, or anticancer activities. Additionally, this compound is used in research to study its reactivity and potential applications in drug discovery and medicinal chemistry. Its versatility in organic synthesis also extends to the production of fine chemicals and specialty materials.