PD 128907 is a potent and selective agonist of dopamine D2 and D3 receptors. It is used for studying the role of these receptors in the brain, in roles such as inhibitory autoreceptors that act to limit further dopamine release, as well as release of othe
GSK 189254A is a histamine H3 receptor antagonist for the treatment of narcolepsy. Histamine H3 receptor antagonists have been shown to increase the release of neurotransmitters in the brain and to enhance cognition in vivo. The compound may also be usefu