thus , the abilities of epinephrine , norepinephrine , methyldopa , ( +/- ) -methylnorepinephrine and ( +/- ) -methylepinephrine to compete for alpha 1- ( [ 3h ] wb-4101 ) and alpha 2- ( [ 3h ] clonidine ) binding sites in rat brain wee compared .
C0014563
epinephrine
C0028351
norepinephrine