Used primarily as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It serves as a key reagent in the preparation of various active pharmaceutical ingredients (APIs) by facilitating the introduction of the carbethoxy group into target molecules. Additionally, it is employed in the synthesis of heterocyclic compounds, which are crucial in drug development. Its role in protecting amine groups during multi-step synthetic processes is also noteworthy, ensuring selective reactions and enhancing yield in complex chemical transformations.