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US 4,026,953 AGranted
Solvents for NMR spectroscopy
AssigneeMerck Patent GmbH
InventorsLudwig Pohl, Werner Theysohn, Richard Unger
Life of this patent
Estimating the term…
Abstract
Organic solvents containing less than 0.2 atom percent of .sup.13 C and which preferably are at least partially deuterated are produced from .sup.13 C-depleted gaseous carbon compounds and are advantageously employed as solvents for .sup.13 C NMR spectroscopy.
Claims5
An at least partially deuterated methanol or ethanol having a carbon-13 content of not more than 0.2 atom percent.
Dependencies are inferred from the claim text.