... MALDI-PSD-TOF MS(data not shown). As these ions only contained oneFuc3NAc residue each, these experiments could notprovide any information concerning the Fuc3NAc distri-bution on the Rha backbone. These ... 2). The anomeric1JC,H-value (161 Hz) indicated the bconfiguration. A further indication of the b configurationwas the observation of a coupling constant H1 to H2,between 0.5 and 1 Hz, and the ... Fuc3NAc distribution on the Rha backbone of these oligosaccharides was similaras in fraction 1, the cluster of ions originating fromoctasaccharides contained ions from sodium adducts of Rha8,Rha7Fuc3NAc,...