aldohexoses

allose, altrose, glucose, mannose, gulose, idose, galactose, and talose are the 8 D-aldohexoses. a neumonic used to remember these aldohexoes is "All Altruists Gladly Make Gum in Gallon Tanks" When drawn in this order, the projections of the D-  aldohexoses follow a pattern. Allose has all four hydroxyl groups on the right. At carbon 2, the hydroxyl groups alternate right-left. At carbon 3, the first two are on the right, the next two are on the left, and so on. At carbon 4, the first four are on the right and the rest are on the left. At carbon 5, all eight D-  aldohexoses have the hydroxyl group on the right.