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. 2010 Apr 29;8(5):1567–1636. doi: 10.3390/md8051567

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© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland

This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

PMC Copyright notice

¹H NMR spectra of chitosan (DP = 25, DA < 0.001) N-alkylated with the N-acetylated trimer A–A–M. Reprinted from Carbohydrate Research 337, 2002, Tømmeraas, K., Köping-Höggård, M., Vårum, K.M., Christensen B.E., Artursson, P., Smidsrød, O., Preparation and characterization of chitosans with oligosacharide branches, 2455–2462, Copyright (2010), with permission from Elsevier [303].