Question

Can someone help label both of these NMR spectra (each peak) for D-mannose and draw out the structure. thank you

14,0 15,0 16,0 142.64 11.0 12.0 13.0 001 2.0 02 09 OS 3.0 02 15.17 15.12 abundance 5.7 5.6 55 54 53 5.2 5.1 5.0 49 48 47 4.6 4.5 44 43 42 41 40 39 38 37 36 35 34 33 32 3.13.0 29 28 27 26 25 24 23 22 21 20 19 18 17 16 Xparts per Million : IH

Answer 1

Hello there,

The spectra you have provided does not belong to D-mannose. This spectra might be product of some reaction of D-mannose. For your reference i am attaching the predicted chemical shifts and NMR spectra of D-mannose from the software.

I would love to assist further. If you have any details that we can work upon further, kindly post in comments.

\9.72 5.18 НО 4.37 НО 3.40 H— 3.50 H -Н 4.36 -Н 3.72 ОН 4.51 -ОН 4.37 3.59;3.53 НО 3.94 10 Нао PPM

Cheers

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