Buscar
Mostrando ítems 21-30 de 5866
Fingerprint and authenticity roasted coffees by 1H-NMR: the Brazilian coffee case
(2018-02-01)
With globalization, it has become necessary to adopt policies to regulate the coffee market, addressing problems including the authenticity and traceability of products. It is therefore important to establish methodologies ...
H-1-N-15 NMR studies of the complex bis(S-allyl-L-cysteinate)palladium(II)
(Elsevier B.V., 2006-05-15)
H-1-N-15 2D NMR data for S-allyl-L-cysteine (deoxyalliin) and for bis(S-allyl-L-cysteinate)palladium(II) complex are presented in this manuscript. Large upfield N-15 NMR shift of the amine nitrogen in the spectrum of the ...
Detailed H-1 and C-13 NMR structural assignment and relative stereochemistry determination for three closely related sesquiterpene lactones
(JOHN WILEY & SONS LTD, 2008)
A complete analysis of H-1 and C-13 NMR spectra of the trypanocidal sesquiterpene lactone eremantholide C and two of its analogues is described. These structurally similar sesquiterpene lactones were submitted to H-1 NMR, ...
13C-NMR SPECTRA OF AZAFLUORENONES
(American Chemical Society, 1988-09-22)
The 13C-nmr chemical shifts of onychine (l-methyl4-aza8uoren-9-one) [l]
were assigned with the aid ofheternnuclear 2D-nmr spectraand these results were used to interpret
the 13C nmr spectra of several other synthetic duorenones.