Fructose (fruit sugar) is a monosaccharide - formula C6H12O6.It is also another 6-carbon (hexose) sugar. Notice the 6 carbon atoms (grey) forming the backbone of the molecule, and the oxygen atom (red) in the ring - which is a 5 sided ring, unlike in glucose. The hydrogen atoms (white) are either attached directly to the carbons, or via oxygen as OH groups - at an angle. Only the two carbons outside the ring ( number 1 & 6) have 2 single hydrogens and an OH group. Mouse and movement options Colours explained |