Ethyl 4-Cyanocinnamate is widely used in organic synthesis, particularly as a building block for creating more complex chemical structures. It serves as a key intermediate in the production of pharmaceuticals, where it contributes to the development of compounds with potential therapeutic properties. Additionally, it is utilized in the synthesis of organic materials, including liquid crystals and polymers, due to its ability to form stable and functionalized frameworks. Its application extends to research laboratories, where it is employed in studying reaction mechanisms and developing new synthetic pathways.