Is Glucose an Aldehyde?

Glucose is a monosaccharide containing six carbon atoms and an aldehyde group, and is therefore an aldohexose. The glucose molecule can exist in an open-chain (acyclic) as well as ring (cyclic) form.

Is glucose an aldehyde or ketone?

Glucose and fructose, for example, are carbohydrates with the formula C₆H₁₂O₆. These sugars differ in the location of the C=O. double bond on the six-carbon chain, as shown in the figure below. Glucose is an aldehyde; fructose is a ketone.

What type of aldehyde is glucose?

Glucose is a pentahydroxy aldehyde. Its herniacetal with one of its own alcohol groups is stable, in contrast to most herniacetals. In fact, glucose exists mainly (> 99.9 percent) in the glucopyranose form, a cyclic hemiacetal.