Used in biochemical research as a labeled compound for studying metabolic pathways and detoxification processes. It helps in tracing the metabolism of trichloroethylene and related compounds in biological systems. The deuterium labeling allows for precise tracking using mass spectrometry, aiding in the understanding of how these chemicals are processed and eliminated by the body. It is particularly valuable in toxicology studies to assess the impact of trichloroethylene exposure and its metabolites.