the relative potencies of contractive effect were adenosine greater than amp greater than adp greater than atp greater than 2-chloroadenosine greater than n6-phenylisopropyl-adenosine ( pia ) greater than 5'-n-ethylcarboxamidoadenosine ( neca ) greater than adenylosuccinate greater than succinyladenosine .
C0001443
adenosine
C0050789
n-ethylcarboxamidoadenosine