Used primarily as an intermediate in organic synthesis, especially in the preparation of pharmaceuticals and biologically active compounds. Its conjugated system and functional groups make it suitable for Michael addition reactions and cyclization processes. Commonly employed in the development of kinase inhibitors and other medicinal agents due to its ability to mimic peptide bonds and participate in hydrogen bonding. Also utilized in the synthesis of dyes and fluorescent probes, where its structural flexibility enhances optical properties. Its amine and carboxylic acid functionalities allow for easy modification and incorporation into larger molecules.