Used primarily in research and development, particularly in the field of pharmacology, it serves as a deuterated analog for tracing and studying metabolic pathways of benzhydrylpiperazine derivatives. Its application is crucial in the synthesis of labeled compounds for use in mass spectrometry and NMR spectroscopy, aiding in the accurate detection and quantification of substances in complex biological matrices. Additionally, it plays a significant role in the development of new therapeutic agents, where understanding the metabolic fate of compounds is essential for drug safety and efficacy.