High performance liquid chromatography was performed by the ion pair method on unsaturated disaccharides produced from chondroitin sulfates by the action of chondroitinase. Completely separated peaks corresponding to deltaDi-0S, deltaDi-4S, and deltaDi-6S were obtained on a column of mu-bondapak-C18 with 0.035 M tetra-butylammonium phosphate (pH 7.54) as a mobile phase. There was a linear relationship between the ratio of the peak area and the amount of each standard tested.
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Ototani et al. (1979) studied this question.