Abstract
[structure: see text] The widely used internal standard for NMR studies in aqueous solution DSS (sodium 4,4-dimethyl-4-silapentane-1-sulfonate) can interact with cationic peptides, diminishing its value for such studies. This paper introduces DSA (4,4-dimethyl-4-silapentane-1-ammonium trifluoroacetate) as a new internal standard that does not suffer from this problem.
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Amino Acids, Aromatic / chemistry
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Amino Acids, Basic / chemistry
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Fluoroacetates*
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Magnetic Resonance Spectroscopy / methods*
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Organosilicon Compounds / chemical synthesis*
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Peptides / analysis
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Peptides / chemistry
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Reference Standards
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Reproducibility of Results
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Solutions / chemistry
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Trifluoroacetic Acid / chemical synthesis*
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Water / chemistry
Substances
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4,4-dimethyl-4-silapentane-1-ammonium trifluoroacetate
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Amino Acids, Aromatic
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Amino Acids, Basic
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Fluoroacetates
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Organosilicon Compounds
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Peptides
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Solutions
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Water
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Trifluoroacetic Acid