D-/L- system naming: the (left-) or (right-) hand side?

The Fischer convention was introduced to specify the configuration of a stereogenic center and uses the symbols D and L. The use of capital letters is to differentiate from the “d” / “l” notation (optical descriptor) described earlier. This nomenclature system has become obsolete. In general the D/L system of nomenclature is superseded by the Cahn-Ingold-Prelog (CIP) rule to describe the configuration of a stereogenic/chiral center. But D-/L-system of naming is still employed to designate the configuration of amino acids …

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