Epimers Sugars that differ only in their stereochemistry at a single carbon. 1CHO C2epimers CHO CHO H H-2 OH H-2 一 OH HO3H HO-3H C4 epimers HO3H H-4-OH H-4-OH HO牛H H-5-OH H-5-OH H CH,OH CH,OH CH,OH D-mannose D-glucose D-galactose => Chapter 23 8Chapter 23 8 Epimers Sugars that differ only in their stereochemistry at a single carbon. =>