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. Author manuscript; available in PMC: 2014 Jul 28.
Published in final edited form as: Carbohydr Res. 2005 Oct 17;340(14):2297–2304. doi: 10.1016/j.carres.2005.07.016

Figure 2.

Figure 2

1H NMR spectra of hyaluronan and methyl ester of hyaluronan derivatives. (A) Hyaluronan, (B) partially methyl-esterified hyaluronan (~80%), (C) fully methyl-esterified hyaluronan. (*) Impurities from a vacuum pump.