Ethyl 4-chlorocinnamate is widely used in organic synthesis as a key intermediate for the production of various pharmaceutical compounds. Its structure makes it valuable in the development of anti-inflammatory and antimicrobial agents. Additionally, it serves as a building block in the synthesis of fine chemicals and specialty polymers. In research, it is employed in studies related to photochemical reactions and material science due to its unique reactivity under light exposure. The compound also finds application in the fragrance industry, where it contributes to the creation of complex aromatic formulations.