(S)-Terazosin is an active S-enantiomer of Terazosin. (S)-Terazosin is a potent and high-affinity antagonist of α-adrenoceptor(α1a, α1b and α1d-adrenoceptor with Ki values of 3.91 nM, 0.79 nM and 1.16 nM, respectively).
Ulimorelin is a ghrelin receptor agonist (EC50: 29 nM and a Ki of 16 nM). Ulimorelin is a prokinetic agent and causes vasorelaxation through competitive antagonist action at α1-adrenoceptors.
Delequamine HCl is a potent and selective alpha 2-adrenoceptor antagonist. Delequamine HCl has a pKi of 9.45 for alpha 2-adrenoceptors in the rat cortex (pA2 in the guinea-pig ileum of 9.72).