(2) C6H1206 Explanation: Fructose, or fruit sugar, is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose. It is a 6-carbon polyhydroxyketone with chemical formula of C6H12O6. Fructose was discovered by French chemist Augustin-Pierre Dubrunfaut in 1847.