a novel high affinity radioiodinated photoaffinity probe , 4-amino-6,7-dimethoxy-2 [ 4- [ 5 ( 3- [ 125i ] iodo-4-azidophenyl ) pentanoyl ] -1- piperazinyl ] -quinazoline , structurally related to the potent alpha 1-adrenergic antagonist prazosin , was developed and used to covalently label the rat cerebral cortex alpha 1-adrenergic receptor .
C0034407
quinazoline
C0032912
prazosin