we have synthesized the two naturally occurring enkephalins ( methionine-enkephalin and leucine-enkephalin ) as well as four other analogs ( methinonine-enkephalin amide , s-benzyl sulphonium analog of methionine-enkephalin , 3-benzyl-tyrosine analog of methionine-enkephalin and 3-benzyl-tyrosine analog of leucine-enkephalin ) in order to study their relative potency and their inactivation of different tissues .
C0014298
enkephalin
C0014294
leucine-enkephalin