competitive binding studies reveal the appropriate a2 receptor pharmacologic potency order with 5'-n-ethylcarboxamidoadenosine ( neca ) greater than ( - ) -n6- [ ( r ) -1-methyl- 2-phenylethyl ] adenosine ( r-pia ) greater than ( + ) -n6- [ ( s ) -1-methyl-2- phenylethyl ] adenosine ( s-pia ) .
C0050789
n-ethylcarboxamidoadenosine
C0001443
adenosine