C6H8O6 is the chemical formula for glucose, a simple sugar with the molecular formula C6H12O6. It is a monosaccharide, the most basic unit of carbohydrates, and is also known as dextrose or grape sugar. Glucose is an important energy source for cells and is broken down through cellular respiration to release energy. Glucose is found in many foods, including fruits, vegetables, and grains, and is also produced by the body through the breakdown of carbohydrates.