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Tests for Carbohydrates

D-Glucose, D-...

Question

D-Glucose, D-Mannose and D-Fructose from same osazone on reaction with phenylhydrazine because they have same configuration at carbons $x, y$ and $z$ . $x + y + z = ?$

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Solution

-Glucose, D-Mannose and D-Fructose from same osazone on reaction with phenylhydrazine because they have same configuration at carbons x,y & z (third, fourth and fifth). $x + y + z = 3 + 4 + 5 = 12.$

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Q. Same osazone derivative is obtained in case of D-glucose, D-mannose and D-fructose, due to:

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C_{2}

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(III) D - mannose
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\to

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The value of n is:

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