2.2 All the monosacchrides except dihydroxyacetone contain one or more asymmetric (chiral) carbon atoms 2.2.1 The configuration of an asymmetric carbon in an open chain monosacchride is usually indicated by the Fischer projection formulas(fig) 2.2.2 The carbon atoms of a sugar are numbered starting at the end nearest to the carbonyl group.2.2 All the monosacchrides except dihydroxyacetone contain one or more asymmetric (chiral) carbon atoms. 2.2.1 The configuration of an asymmetric carbon in an open chain monosacchride is usually indicated by the Fischer projection formulas (fig.) 2.2.2 The carbon atoms of a sugar are numbered starting at the end nearest to the carbonyl group