How many aldohexoses are possible for the
molecular formula C6 H1206,?
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An aldohexose is a hexose with an aldehyde group on one end. The aldohexoses have four chiral centres for a total of 16 possible aldohexose stereoisomers (24). Of these, only three commonly occur in nature: D-glucose, D-galactose, and D-mannose.
A ketohexose is a ketone-containing hexose (a six-carbon monosaccharide). The most common ketohexoses, each of which represents a pair of enantiomers (D- and L-isomers), include psicose, fructose, sorbose, and tagatose.
Ribose is an aldopentose, which means a pentose sugar with an aldehyde functional group in position one
Erythrose is a tetrose saccharide with the chemical formula C4H8O4. It has one aldehyde group, and so is part of the aldose family.
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