(3S,4S,5R)-1,3,4,5,6-pentahydroxyhexan-2-one
Tagatose is a functional sweetener. It is a naturally occurring monosaccharide, specifically a hexose. It is commonly found in dairy with a similar texture and sweetened capacity to sucrose but with only a third of the calories. It is approved as a food additive as a low calorie sweetener. Additionally, it is under investigation by Spherix for the treatment of obesity and type II diabetes.