Deuterated DMSO ((CD3)2S=O) is a form (called an isotopologue) of dimethyl sulfoxide (DMSO, (CH3)2S=O)) in which the hydrogen atoms ("H") are replaced with deuterium (heavy hydrogen) isotope ("D"). Dimethyl sulfoxide (DMSO is the Chemical compound with the formula (CH32SO Isotopologues are molecules that differ only in their isotopic composition Dimethyl sulfoxide (DMSO is the Chemical compound with the formula (CH32SO Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 Deuterium, also called heavy hydrogen, is a Stable isotope of Hydrogen with a Natural abundance in the Oceans of Earth Isotopes (Greek isos = "equal" tópos = "site place" are any of the different types of atoms ( Nuclides Deuterated DMSO is a common solvent used in NMR spectroscopy. A solvent is a liquid or gas that dissolves a solid liquid or gaseous Solute, resulting in a Solution. Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy, is the name given to a technique which exploits the magnetic properties of certain nuclei