Perdeuterated is an adjective used in chemistry to describe molecules that are fully deuterated. Deuterium is a stable isotope of hydrogen, and perdeuterated compounds can provide valuable information for scientists as they often have unique properties. Synonyms for perdeuterated include fully deuterated, fully hydrogenated, and fully labeled. These synonyms all refer to the same process of replacing all hydrogen atoms in a molecule with deuterium atoms. Perdeuterated compounds are used in a variety of research applications, including in the pharmaceutical industry for drug development and in nuclear magnetic resonance spectroscopy for structural analysis.