Saccharin is an artificial sweetener that is used in diet beverages. In order for it to be metabolized by the body, it must pass into cells. Below are shown the two forms of saccharin. Saccharin has a pkb of 12.69. If you drink a beverage that is sweetened with saccharin, as the saccharin passes through your digestive system, where in your body will the saccharin be most likely pass into your cells to begin getting metabolized? NH NH2 saccharin duodenum (first part of small intestine joined to stomach), pH = 6.0 A. B. esophagus (tract between mouth and stomach), pH = 7.0 saliva in mouth, pH = 7.2 %3D C. stomach, pH = 2.0 D.