Sucrose is a common disaccharide that, upon hydrolysis, yields an equimolar mixture of D-(+)-glucose and D-(-)-fructose . Structurally, it is composed of two monosaccharide units: $\alpha$-D-glucopyranose and $\beta$-D-fructofuranose. These units are held together by an $\alpha, \beta$-glycosidic linkage between C1 of the glucose unit and C2 of the fructose unit.