Used as a deuterated reagent in the synthesis of pharmaceuticals, particularly in the development of drugs where isotopic labeling is required for tracking and studying metabolic pathways. It serves as a building block in the production of complex molecules, enabling researchers to gain insights into drug behavior and interactions within biological systems. The incorporation of deuterium enhances the stability and longevity of the compounds, making it valuable in pharmacokinetic and pharmacodynamic studies. Additionally, it is employed in the creation of labeled compounds for nuclear magnetic resonance (NMR) spectroscopy, aiding in structural analysis and research.