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Exactly 81.0 mg of glycogen, a branched polysaccharide, were exhaustively methylated and then hydrolyzed. The methylated products were separatd and...

Exactly 81.0 mg of glycogen, a branched polysaccharide, were exhaustively methylated and then hydrolyzed. The methylated products were separatéd and identified. Exactly 62.5 μmoles of 2,3-dimethyl glucose were obtained.

(a) What percent of the total glucose residues are branch points?

(b) What were the other products of the methylation and hydrolysis, and how much of each were formed? (You may find it useful to draw simple sketches to develop your answers.)

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