<unk>  is a hexose, a six carbon monosaccharide. It has an aldehyde group and is an aldose. It is not found in nature, but its uronic acid, iduronic acid, is important. It is a component of dermatan sulfate and heparan sulfate, which are glycosaminoglycans. The first and third hydroxyls point the opposite way from the second and fourth. It is made by aldol condensation of D- and -L glyceraldehyde. L-Idose is a C-5 epimer of D-glucose.
Idose
Dosing
Alder
Molecular orbital
Torque
Dose Profile
Position 
Quench