fructose, fruit sugar, monosaccharide, chemical structure

acyclic black blood c6h12o6 carbohydrate care chain chemical chemistry corn cyclic diabetes energy flat formula fructofuranose fructopyranose fructose fruit furanose haworth health honey illustration isomer ketonic levulose molecular molecule monosaccharide natta open organic projection pyranose research ring science simple skeletal source structure sugar sweet syrup vector