the rank order of potency for different agonists and antagonists to compete for binding with 3h-uk-14,304 indicated an alpha 2-adrenoceptor interaction : ( - ) adrenaline greater than or equal to clonidine greater than ( - ) noradrenaline greater than ( - ) isoprenaline and yohimbine = rauwolscine greater than phentolamine greater than prazosin greater than or equal to corynanthine greater than timolol respectively .
C0014563
adrenaline
C0028351
noradrenaline