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Why does compound (A) not form an oxime ...

Why does compound (A) not form an oxime ?

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The compound (A) is pentaacetyl glucose or glucose pentaacetate. Oximes are given by the compounds which have a free carbonly group (aldehydic or ketonic group) present. Since the compound does not have such like group, it fails to react with hydroxylamine to form an oxime.
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