Dimethyl sulfoxide-d6 (DMSO) (D, 99.9%)
Product BrandCambridge Isotopes Ltd (CIL)
Synonyms: DMSO-D6; Methyl sulfoxide-D6; Hexadeuterodimethyl sulfoxide
Novachem stocks the DMSO-D6 for NMR Applications in a range of sizes in Australia.
Deuterated DMSO is produced by heating DMSO in heavy water (D2O) with a basic catalyst such as calcium oxide. The reaction does not give complete conversion to the d6 product, and the water produced must be removed and replaced with D2O several times to drive the equilibrium to the fully deuterated product.
Pure deuterated DMSO shows no peaks in 1H NMR spectroscopy and as a result is commonly used as an NMR solvent. However commercially available samples are not 100% pure and a residual DMSO-d5 1H NMR signal is observed at 2.50ppm (quintet, JHD=1.9Hz). The 13C chemical shift of DMSO-d6 is 39.52ppm (septet)