This compound is primarily utilized in the field of organic synthesis, particularly in cross-coupling reactions such as the Suzuki-Miyaura reaction. Its boronic acid group enables it to act as a key reagent in forming carbon-carbon bonds, which is essential in constructing complex organic molecules. The deuterated ethyl group (ethyl-d5) makes it valuable in isotopic labeling studies, aiding in the tracking and analysis of chemical reactions and metabolic pathways in research. Additionally, its cyano group enhances its reactivity, making it suitable for the synthesis of pharmaceuticals and agrochemicals. Its application is particularly significant in the development of deuterated drugs, where it helps in improving drug stability and understanding pharmacokinetics.