Short Description
Molecules where one or more hydrogen atoms (protium) have been replaced by deuterium, an isotope of hydrogen that has one proton and one neutron in its nucleus. Due to deuterium's heavier mass, deuterated molecules exhibit subtle but measurable differences in their physical and chemical properties, such as vibrational frequencies, reaction rates, and nuclear magnetic resonance (NMR) spectra. They are often used in research as tracers or for spectroscopic analysis.