Conformational analysis of protected norvaline oligopeptides by high resolution proton magnetic resonance

1977 ◽  
Vol 99 (19) ◽  
pp. 6211-6219 ◽  
Author(s):  
E. S. Pysh ◽  
C. Toniolo
1972 ◽  
Vol 55 (5) ◽  
pp. 1101-1103
Author(s):  
K D Bartle

Abstract Mass spectrometry allows the number of chlorine atoms per polychlorobiphenyl molecule to be determined but not the positions of substitution. A method of identifying PCB components from high resolution proton magnetic resonance spectra is illustrated by application to 2,5,2′,5′-tetrachloro- and 2,3,4,2′,4′,- 5′-hexachlorobiphenyls separated by gas chromatography from a commercial PCB mixture.


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