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. Author manuscript; available in PMC: 2010 Dec 9.
Published in final edited form as: J Am Chem Soc. 2009 Dec 9;131(48):17591–17596. doi: 10.1021/ja9049355

Figure 2.

Figure 2

The natural abundance spectrum of fructose (a) and DNP spectrum of [2-13C]-fructose (b). The linear form is present in the DNP spectrum, but at a very low level analogous to the thermal spectrum. (Top) Structures of each of the isomers are shown with their analogous resonance.