Use of Fourier transform 1H NMR in the identification of vitamin D2 metabolites.


The use of Fourier transform 1H NMR to characterize vitamin D2 metabolites is described. A 300-MHz spectrometer capable of generating a 6-microseconds pulse and a sweep width of 4000 Hz was used. High-resolution spectra were obtained on 5 micrograms of material using standard 5-mm NMR tubes fitted with glass inserts and isotopically enriched chloroform-d… (More)


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