Question

What is the isomer of sugar and glucose

Answer 1

Glucose has 4 chiral carbons in its aldehyde form. So there are 16 possible stereoisomers for glucose.But these are not significant and we consider mainly the optical isomers.Among the optical isomers, D isomer ie D glucose is widely present in nature whereas L glucose is not abundant.

Sugar (Sucrose) has fructose and glucose linked together using glycosidic linkage.Here isomer would be L-glucopyranosyl .