Used as a key intermediate in organic synthesis, particularly in the preparation of heterocyclic compounds such as pyrazoles, pyridines, and pyrroles. It participates in condensation reactions to form cyclic structures important in pharmaceuticals and agrochemicals. Commonly employed in the synthesis of active pharmaceutical ingredients (APIs) due to its ability to introduce functionalized carbon chains. Also utilized in the production of dyes, fragrances, and specialty polymers where multifunctional esters are required. Its reactivity in Michael additions and Claisen condensations makes it valuable in building complex molecules in research and industrial settings.