Determination of site-specific D/H isotope ratios of glycerol from different sources by 2 H-NMR spectroscopy

1999 ◽  
Vol 208 (3) ◽  
pp. 194-197 ◽  
Author(s):  
A. Hermann
Keyword(s):  
Nmr Spectroscopy ◽  
Isotope Ratios ◽  
Site Specific ◽  
H Nmr ◽  
Different Sources

Site-Specific pKa Determination of Selenocysteine Residues in Selenovasopressin by Using 77Se NMR Spectroscopy

2011 ◽  
Vol 50 (50) ◽  
pp. 11952-11955 ◽  
Author(s):  
Mehdi Mobli ◽  
David Morgenstern ◽  
Glenn F. King ◽  
Paul F. Alewood ◽  
Markus Muttenthaler
Keyword(s):  
Nmr Spectroscopy ◽  
Site Specific ◽  
Pka Determination ◽  
77Se Nmr Spectroscopy

Determination of the content of fatty acid methyl esters (FAME) in biodiesel samples obtained by esterification using 1 H-NMR spectroscopy

2008 ◽  
Vol 46 (11) ◽  
pp. 1051-1054 ◽  
Author(s):  
Vinicius M. Mello ◽  
Flavia C. C. Oliveira ◽  
William G. Fraga ◽  
Claudia J. do Nascimento ◽  
Paulo A. Z. Suarez
Keyword(s):  
Fatty Acid ◽  
Nmr Spectroscopy ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
H Nmr ◽  
Acid Methyl

Enantiomeric NMR discrimination of carboxylic acids using actinomycin D as a chiral solvating agent

2019 ◽  
Vol 17 (6) ◽  
pp. 1466-1470 ◽  
Author(s):  
Liwen Bai ◽  
Pian Chen ◽  
Jiangxia Xiang ◽  
Jiarui Sun ◽  
Xinxiang Lei
Keyword(s):  
Nmr Spectroscopy ◽  
Carboxylic Acids ◽  
Actinomycin D ◽  
H Nmr ◽  
Chiral Solvating Agent

We extended actinomycin D as a practical CSA for rapid enantiomeric determination of chiral carboxylic acids by1H NMR spectroscopy.

Chemical Shift Nonequivalence of Enantiomers of Amino Acid Derivatives in 1H NMR and 19F NMR Spectroscopy Induced by L-Chirasil- Val.

1992 ◽  
Vol 47 (7) ◽  
pp. 1034-1036 ◽  
Author(s):  
Bernhard Koppenhoefer ◽  
Michael Hummel
Keyword(s):  
Amino Acid ◽  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
Methyl Esters ◽  
Enantiomeric Purity ◽  
Peak Splitting ◽  
H Nmr ◽  
Acid Methyl ◽  
Amino Acid Methyl Esters

Enantiomers of N-trifluoroacetyl-amino acid methyl esters in CC14 solution, after addition of the chiral polysiloxane (L)-Chirasil-Val, display a chemical shift nonequivalence ΔΔδ in both 1H NMR and 19F NMR spectroscopy. The effects found for the leucine and valine derivatives can be correlated with the thermodynamic parameters of interaction in the undiluted system, as determined by gas chromatography. In CDC13 solution, no peak splitting was observed. The method is potentially useful for the determination of the enantiomeric purity of substrates of low volatility.

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