Used in pharmaceutical research as a labeled compound for studying metabolic pathways and drug interactions. It serves as a deuterated analog in pharmacokinetic and pharmacodynamic studies, providing insights into the behavior of parent molecules in biological systems. Its application extends to the development of therapeutic agents targeting neurological disorders, where it aids in tracing and understanding drug distribution and efficacy. Additionally, it is employed in analytical chemistry as an internal standard in mass spectrometry to enhance the accuracy of quantitative measurements.