the relative potencies of the agonists , estimated according to their dose-dependent actions , were in such an order that clonidine greater than epinephrine ( congruent to norepinephrine ) greater than phenylephrine congruent to methoxamine , regardless of which of the three parameters ( i.e. , insulin release , cyclic amp accumulation , and adenylate cyclase activity ) was used for estimation .
C0014563
epinephrine
C0028351
norepinephrine