Displaying 2 results of Aspartame Stable Isotopes Aspartame is a low-calorie artificial sweetener that is commonly used in food and beverage products. Aspartame Stable Isotopes are isotopically labeled forms of aspartame that are used in scientific research, drug development, and quality control testing. These isotopes help researchers to track the metabolism and distribution of aspartame in the body, and to differentiate between different forms of the sweetener that may have different properties. They are also used to ensure the accuracy and consistency of analytical methods used to detect aspartame in food and beverages.