Used in organic synthesis as a building block for creating complex molecules, particularly in pharmaceutical research. It serves as a precursor for developing compounds with potential biological activity, such as anti-inflammatory or anticancer agents. Additionally, it is utilized in the design of fluorescent dyes and sensors due to its indole core, which can interact with light and other molecules. Its dicarboxylic acid groups enable it to form stable bonds with other compounds, making it valuable in material science for creating polymers or coordination complexes.