Used as a labeled compound in metabolic studies to trace and analyze biochemical pathways. It is particularly valuable in research involving the metabolism of benzamide derivatives, providing insights into drug metabolism and pharmacokinetics. The deuterium labeling allows for precise tracking using techniques like mass spectrometry or NMR, enhancing the accuracy of experimental data. Its application extends to the development of pharmaceuticals, where understanding metabolic stability and degradation is crucial. Additionally, it serves as a tool in environmental studies to monitor the breakdown of similar compounds in ecosystems.