from the order of potency : cyclohexyladenosine greater than ( - ) phenylisopropyladenosine [ - ) pia ) greater than 5'-n-ethylcarboxamideadenosine ( neca ) greater than 2-chloradenosine greater than ( + ) phenylisopropyladenosine greater than adenosine , the inhibitory adenosine receptor may be classified as a1- ( r1- ) receptor .
C0031484
phenylisopropyladenosine
C0001443
adenosine