CJ-1639 is a drug derived from pramipexole, which acts as a highly potent and selective full agonist for the dopamine D3 receptor. It has a Ki of 3.61 nM and is over 1000x selective for D3 over the D1 and D2 receptors.
The compounds of every Wikipedia article carrying a Chembox or a Drugbox, refreshed daily, with the values their infoboxes give. The pages need JavaScript; the API does not.