poly[(l-*4)ZJGlcNg]; see insert in spectrum Polysciences Inc., Warrington, PA, USA suspension in methanol; 10 ug standard 3 X 104

REMARKS - Chitosan is a semi-synthetic compound obtained on de-acetylation of chitin. The structure and composition of chitosan is less well defined than that of the parent compound (compare Spectra A.12 and A.12a, representing chitosan preparations from different manufacturers). The spectrum shows a rather complex pattern of mainly odd-numbered peaks (N-containing pyrolysis products) which is significantly different from that of chitin (Spectrum A.13).

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