Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of drugs targeting central nervous system disorders. Its incorporation into drug molecules enhances metabolic stability and improves pharmacokinetic properties. Also applied in radiopharmaceutical research for labeling compounds in positron emission tomography (PET) imaging, aiding in the study of biological processes and disease mechanisms. Its deuterated form is valuable in isotope labeling studies to trace chemical reactions and metabolic pathways in drug discovery.