Dimethyl trans-Stilbene-4,4'-dicarboxylate is primarily used in the field of organic synthesis and materials science. It serves as a key intermediate in the production of advanced organic compounds, particularly those with applications in liquid crystal displays (LCDs) and other optoelectronic devices. Its rigid, conjugated structure makes it suitable for creating materials with desirable optical and electronic properties. Additionally, it is utilized in the development of fluorescent dyes and sensors due to its ability to exhibit strong fluorescence under certain conditions. In polymer chemistry, it acts as a building block for synthesizing high-performance polymers with enhanced thermal stability and mechanical strength.