This compound is primarily used as an internal standard in analytical chemistry, particularly in mass spectrometry and nuclear magnetic resonance (NMR) studies. Its deuterated structure allows for precise tracking and quantification of similar non-deuterated compounds in complex mixtures, ensuring accurate measurements in research involving phthalates or related esters. It is also employed in metabolic studies to trace the pathways and breakdown products of specific chemicals in biological systems. Additionally, it finds application in quality control processes for verifying the consistency and purity of chemical formulations in industrial settings.