(2E)-3-[4-(methoxycarbonyl)phenyl]prop-2-enoic acid is primarily used in organic synthesis and pharmaceutical research. It serves as a key intermediate in the production of various bioactive compounds, including potential drug candidates. Its structure, featuring both a carboxylic acid and an ester functional group, makes it versatile for coupling reactions, such as esterification or amide formation, which are crucial in developing therapeutic agents. Additionally, it is utilized in the synthesis of organic materials, particularly in the development of polymers or coatings with specific optical or electronic properties. Its conjugated system also makes it a candidate for studies in photochemistry and materials science.