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Novel phenomena in the 13C NMR spectra of amino acids

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Summary.

13C NMR integral areas and spin-lattice relaxation times (T 1’s) of a series of amino acids were determined at different concentrations. It was found that the spin-lattice relaxation times were markedly reduced in 3 M magnesium chloride resulting in the integral area being proportional to the number of carbon atoms producing each particular signal, with a reliability in excess of 95%. Magnesium chloride is proposed as a 13C NMR relaxation agent for amino acids.

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Authors and Affiliations

  1. Department of Chemistry, Tsinghua University, Beijing, P.R. China

    J. Tian

  2. 4F TH-UNIS Building II, Tsinghua University, Beijing, P.R. China

    Y. Yin

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  1. J. Tian
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  2. Y. Yin
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Tian, J., Yin, Y. Novel phenomena in the 13C NMR spectra of amino acids. Amino Acids 26, 175–181 (2004). https://doi.org/10.1007/s00726-003-0039-3

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  • DOI: https://doi.org/10.1007/s00726-003-0039-3

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