Page "Carbohydrate" Paragraph 10

Glucose | D-glucose is an aldohexose with the formula ( C · H < sub > 2 </ sub > O )< sub > 6 </ sub >.

The red atoms highlight the aldehyde group, and the blue atoms highlight the chirality ( chemistry ) | asymmetric center furthest from the aldehyde ; because this-OH is on the right of the Fischer projection, this is a D sugar.