Description_x000D_ Application_x000D_ U-99194 maleate has been used as a dopaminergic antagonist to study its effects on immobility episodes and yawning frequency in rats._x000D_ Packaging_x000D_ 25, 100 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ U-99194 is a putative D3 antagonist with a 30-fold preference for the dopamine D3 vs. D2 receptor._x000D_ Features and Benefits_x000D_ This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more._x000D_ This compound is featured on the Dopamine Receptors page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here._x000D_ Preparation Note_x000D_ U-99194 maleate salt is soluble in water at a concentration >5 mg/ml._x000D_ Legal Information_x000D_ LOPAC is a registered trademark of Sigma-Aldrich Co. LLC