Why Is Methyl Iodide Used in the Classical Method of Exhaustive

question 41

Multiple Choice

Why is methyl iodide used in the classical method of exhaustive methylation to determine the positions of glycosidic bonds in a linear polysaccharide?

• A) All free hydroxyls become unstable, allowing hydrolysis of only glycosidic bonds to occur in acid.
• B) All free hydroxyls become stable, allowing hydrolysis of only glycosidic bonds to occur in acid.
• C) All glycosidic bonds react with methyl iodide.
• D) All glycosidic bonds become stable for treatment with acid.
• E) All glycosidic bonds are hydrolyzed with methyl iodide.

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