Used primarily as a deuterated solvent in nuclear magnetic resonance (NMR) spectroscopy, it serves as a non-reactive, stable medium for analyzing molecular structures. Its deuterium atoms provide a clear background signal, enhancing the accuracy of NMR measurements. It is also employed in research and development for studying reaction mechanisms and molecular interactions, particularly in organic chemistry. Additionally, it finds use in the synthesis of deuterated compounds, where its isotopic labeling is crucial for tracing chemical pathways.