the adenosine analogue 5 ' n-ethylcarboxamidoadenosine ( neca ) was a more potent inhibitor of superoxide anion generation than either n6-phenylisopropyladenosine ( pia ) or adenosine , an order of potency consistent with that previously demonstrated for adenosine a2 receptors .
C0031484
phenylisopropyladenosine
C0001443
adenosine