With the aldehyde group in the "up" direction, the the -OH group must project to the right side of the molecule for the D isomer. It is remarkable that the chemistry and enzymes of all living things c...With the aldehyde group in the "up" direction, the the -OH group must project to the right side of the molecule for the D isomer. It is remarkable that the chemistry and enzymes of all living things can tell the difference between the geometry of one optical isomer over the other. Monosaccharides are assigned to the D-family according to the projection of the -OH group to the right on the chiral carbon that is the farthest from the carbonyl (aldehyde) group.
With the aldehyde group in the "up" direction, the the -OH group must project to the right side of the molecule for the D isomer. It is remarkable that the chemistry and enzymes of all living things c...With the aldehyde group in the "up" direction, the the -OH group must project to the right side of the molecule for the D isomer. It is remarkable that the chemistry and enzymes of all living things can tell the difference between the geometry of one optical isomer over the other. Monosaccharides are assigned to the D-family according to the projection of the -OH group to the right on the chiral carbon that is the farthest from the carbonyl (aldehyde) group.