<P> In bio-organic chemistry, a hexose is a monosaccharide with six carbon atoms, having the chemical formula C H O. Hexoses are classified by functional group, with aldohexoses having an aldehyde at position 1, and ketohexoses having a ketone at position 2 . </P> <P> The aldohexoses have four chiral centres for a total of 16 possible aldohexose stereoisomers (2). The D / L configuration is based on the orientation of the hydroxyl at position 5, and does not refer to the direction of optical activity . The eight D - aldohexoses are: </P>

Molecular formula for a monomer with 6 carbons
find me the text answering this question