Saccharin

Also called  Ortho-sulfobenzoic Acid Imide,   organic compound employed as a non-nutritive sweetening agent. It occurs as insoluble saccharin or in the form of various salts, primarily sodium and calcium. Saccharin has about 200–700 times the sweetening power of granulated sugar and has a slightly bitter and metallic aftertaste. For table use, it is sold as 1/4-, 1/2-, or 1-grain pellets of the salts, a 1/4-grain pellet being the equivalent