Aganodine is a guanidine that activates presynaptic imidazoline receptors. Aganodine inhibits the presynaptic release of norepinephrine through its agonism at imidazoline receptors.
Dexisometheptene is an antimigraine drug candidate. Dexisometheptene significantly increases the pain threshold of acute pain response, and potently and selectively binds to receptors in the central nervous system known as imidazoline type-1 (I1) receptor
RX821002 is a potent and selective antagonist of α2-adrenoceptor with low affinity for imidazoline sites. RX821002 displays selectivity for the α2D over the α2A subtypes (pKd values are 9.7 and 8.2 respectively).