Used in pharmaceutical research as a deuterated compound to study drug metabolism and pharmacokinetics. Its presence in molecules helps trace metabolic pathways due to the deuterium isotope effect. Commonly employed in the development of labeled analogs for mass spectrometry and NMR studies, enhancing the precision of analytical methods. Also serves as a building block in organic synthesis for creating complex molecules with potential therapeutic applications. Its incorporation into compounds aids in improving the stability and bioavailability of drug candidates.