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. Author manuscript; available in PMC: 2013 Aug 28.
Published in final edited form as: Handb Exp Pharmacol. 2012;(207):159–176. doi: 10.1007/978-3-642-23056-1_8

Fig. 3.

Fig. 3

Potassium permanganate oxidation of the reducing end N-acetylglucosamine to N-acetylglucosaminic acid. The formation of Structure A causes a shift in the N-acetyl protons to 2.10 ppm, as shown in the 1 H-NMR spectrum. If X=H in Structure A, then the formation of Structure B may also be possible due to further oxidation