Used as a deuterated solvent in nuclear magnetic resonance (NMR) spectroscopy, it helps in analyzing molecular structures by providing a non-reactive, deuterium-substituted environment. It is also employed in organic synthesis as a deuterium-labeled reagent, enabling the study of reaction mechanisms and kinetics. Additionally, it serves as a tracer in metabolic studies to track the pathways of chemical compounds in biological systems. Its stability and isotopic purity make it valuable in research involving isotopic labeling.