Used primarily as a deuterated internal standard in mass spectrometry and NMR spectroscopy for accurate quantification and structural analysis of complex organic mixtures. Its isotopic labeling allows clear differentiation from non-deuterated compounds, enhancing detection sensitivity and reducing background interference. Commonly applied in pharmaceutical research, metabolic studies, and environmental analysis where precise tracking of chemical transformations is required. The selective deuteration pattern improves resolution in analytical signals, making it valuable in studying reaction mechanisms and degradation pathways.