Fructose sugar can be found in many places, such as fruits, fruits juices, vegetables, tree, vine fruits, flowers, berries, honey, and table salt. It is one of the three dietary monosaccharides which means that it gets absorbed directly into blood during digestion. Fructose sugar is also known as fruit sugar. It is often bonded to glucose in plants which forms the disaccharide sucrose. If you keep consuming fructose sugar, it may lead to insulin resistant, obesity and metabolic syndrome. Fructose is a 6-carbon polyhydroxy ketone. The molecular formula for fructose is C6 H12 O6. Fructose sugar exists as a mixture that consists of 70% fructopyranose and about 22% fructofuranose and three other forms.