in contrast to the s-isomer , specific binding ( measured by displacement with 10 microm n6-r-phenylisopropyladenosine ( pia ] of [ 125i ] n6- [ r- ( 3-iodo-4-hydroxyphenyl ) isopropyl ] adenosine ( [ 125i ] r- ihpia ) required about 2 h for equilibrium but bound with a higher affinity .
C0031484
phenylisopropyladenosine
C0001443
adenosine