Used as a stable isotope-labeled internal standard in mass spectrometry and gas chromatography for precise quantification and identification of hydrocarbons in complex mixtures. Its deuterated structure provides a distinct mass shift, enabling clear differentiation from non-labeled compounds during analysis. Commonly applied in environmental testing, petrochemical research, and metabolic studies where accurate tracking of hydrocarbon behavior is required. Also utilized in studies of lipid metabolism and membrane dynamics due to its inert nature and compatibility with biological systems.