NMR Studies on Imidines. II. 1H AND13 C Nuclear Magnetic Resonance Study on The Tautomerism and Geometrical Isomerism of 3-Aryliminoisoindolinones

2010 ◽  
Vol 91 (9) ◽  
pp. 763-790 ◽  
Author(s):  
Luc I. Spiessens ◽  
Marc J. O. Anteunis
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nuclear Magnetic Resonance Study ◽  
Magnetic Resonance Study ◽  
Nmr Studies ◽  
Geometrical Isomerism ◽  
Nuclear Magnetic

31P-nuclear magnetic resonance study of milk fractions

1986 ◽  
Vol 53 (4) ◽  
pp. 539-545 ◽  
Author(s):  
Magnus Wahlgren ◽  
Torbjörn Drakenberg ◽  
Hans J. Vogel ◽  
Petr Dejmek
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Inorganic Phosphate ◽  
Ph Dependence ◽  
Nuclear Magnetic Resonance Study ◽  
Magnetic Resonance Study ◽  
Nmr Studies ◽  
Milk Serum ◽  
Most Probable Explanation ◽  
Nuclear Magnetic

SummaryMilk serum, whey and milk ultrafiltrate were examined by 31P nuclear magnetic resonance (31P-NMR). About 20 phosphorylated milk constituents gave rise to resonances in the spectra. Most of these have been assigned to such well-known milk constituents as inorganic phosphate, N-acetylglucosamine-1-phosphate and glycerophosphorylcholine. Resonances from previously unknown constituents such as phosphocreatine were also observed. When the pH-dependence of inorganic phosphate, N-acetylglucosamine-1 -phosphate, glycerophosphorylcholine and gly-cerophosphorylethanolamine was examined it was observed that the resonance of inorganic phosphate overlapped that of N-acetylglucosamine-1-phosphate around neutral pH. This is the most probable explanation as to why this constituent was not observed in earlier 31P-NMR studies on milk.

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