Rebaudioside C belongs to the family of Steviol Glycosides. It is a natural constituent of the plant Stevia rebaudiana Bertoni and used as natural sweeteners to diabetics and others on carbohydrate-controlled diets.

Rebaudioside B is a rebaudioside that is steviol in which the hydroxy group is replaced by a beta-D-glucopyranosyl-(12)-[beta-D-glucopyranosyl-(13)]-beta-D-glucopyranosyl group. It has a role as a sweetening agent. It is a rebaudioside, a beta-D-glucoside and a trisaccharide derivative. It is functionally related to a beta-D-Glcp-(1->2)-[beta-D-Glcp-(1->3)]-beta-D-Glcp. It is a conjugate acid of a rebaudioside B(1-). Rebaudioside B tastes about 150 times sweeter than sucrose and it is non-caloric.