2-Cyanoethylzinc bromide is primarily used in organic synthesis as a reagent for the introduction of the cyanoethyl group into various organic molecules. It is particularly valuable in the preparation of complex organic compounds, including pharmaceuticals and agrochemicals. The compound is often employed in nucleophilic addition reactions, where it facilitates the formation of carbon-carbon bonds, enabling the construction of more intricate molecular structures. Additionally, it is utilized in the synthesis of specialty chemicals and intermediates, contributing to the development of materials with specific functional properties. Its role in enabling precise chemical transformations makes it a useful tool in research and industrial applications.