( -- ) -n6- ( phenylisopropyl ) adenosine ( pia , 10 microm ) and 5'-n- ( ethylcarboxamide ) adenosine ( neca , 50 microm ) , potent agonists at the adenylate cyclase-coupled r-site adenosine receptor , were investigated for adenylate cyclase inhibition in a guinea pig ventricular membrane preparation by means of the datp assay method .
C0001443
adenosine
C0050789
neca