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REMARKS - Note the unusual peaks at m/z 71, 104 and 140, and the relatively high peaks at m/z 85, 96 and 114. The latter two peaks probably originate from acid decarboxylation-dehydration of hexuronic acid residues. The possibility that m/z 104 represents a polystyrene impurity (see Part I, Figure 1) cannot be excluded. Compare with the spectrum of polygalacturonic acid (Part I, Figure 11; spectrum A.8).

FUCOIDAN (from Fuaus vesieulosus)

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