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Q. When the following aldohexose exists in its D-configuration, the total number of stereoisomers in its pyranose form is :
$CHO — CH_{2} — CHOH— CHOH— CHOH— CH_{2}OH$

Biomolecules

Solution:

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Thus, total number of stereoisomers in pyranose form of D-configuration$ = 2^{3} = 8$