Ketohexose
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A ketohexose is a ketone-containing hexose (a six-carbon monosaccharide). Ketohexoses have three chiral centers, so 8 (23 = 8) different stereoisomers are possible.
The 4 D-ketohexoses are:
CH2OH CH2OH CH2OH CH2OH | | | | C=O C=O C=O C=O | | | | HC-OH HO-CH HC-OH HO-CH | | | | HC-OH HC-OH HO-CH HO-CH | | | | HC-OH HC-OH HC-OH HC-OH | | | | CH2OH CH2OH CH2OH CH2OH D-Psicose D-Fructose D-Sorbose D-Tagatose
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