(R),(S)Nomenclature Different molecules(enantiomers)must have different names. Usually only one enantiomer will be biologically active. OH Configuration around the chiral carbon is specified 米 with (R)and (S). CH NH, Chapter 5 natural alanine =8Chapter 5 8 (R), (S) Nomenclature • Different molecules (enantiomers) must have different names. • Usually only one enantiomer will be biologically active. • Configuration around the chiral carbon is specified with (R) and (S). =>