Used extensively as a solvent in NMR spectroscopy due to its deuterated form, which provides a clear and stable reference signal without interfering with the sample's hydrogen signals. It is particularly valuable in organic chemistry research for analyzing molecular structures and dynamics. Additionally, it serves as a starting material in the synthesis of deuterated compounds, which are crucial in kinetic studies and mechanistic investigations. Its application extends to pharmaceuticals, where it aids in the development and testing of drug molecules by providing insights into their behavior in deuterated environments.