Lazareno S, Birdsall NJ. Estimation of competitive antagonist affinity from functional inhibition curves using the Gaddum, Schild and Cheng-Prusoff equations
7-dihydro-5H-pyrrolo[1,2-a]imidazole: EC50 = 1nM, Emax = 65%; good selectivity over α1B, α1D and α2A subtypes further partial agonistic imidazole compounds