Gerlon de Almeida Ribeiro Oliveira

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Questions related from Gerlon de Almeida Ribeiro Oliveira

Can someone explain why a methyl in phentolamine mesylate presents two correlations for 13C-HSQC, around the region it should appear?

Instead of appearing one single correlation of the signal of the carbon at 20.9 ppm (#11 in the attached figure), aligned to hydrogen at 2.29 ppm, it appeared two correlations (2,32 and 2,26 ppm)....

17 January 2021 4,941 2 View

Can someone explain the 1H NMR spectra pattern of sulfamic acid?

We acquired an 1H spectra of sulfamic acid in DMSO-d6, and it presented one large peak at ~10ppm and a small triplet at ~7ppm (J=52Hz). The triplet at 7 is correlated with nitrogen via HSQC. After...

23 June 2020 9,708 12 View