the rank order of agonist potencies was 5 ' n- ethylcarboxamide adenosine much greater than 2-chloroadenosine greater than l-n6-phenylisopropyladenosine = cyclohexyladenosine greater than d-n6-phenylisopropyladenosine .
C0001443
adenosine
C0031484
phenylisopropyladenosine