S(−)-Raclopride tartrate salt is primarily utilized in neuroscience and pharmacological research due to its selective antagonism of dopamine D2 and D3 receptors. It is widely employed in studies investigating the role of dopamine in behavior, cognition, and motor control. This compound is particularly valuable in positron emission tomography (PET) imaging to visualize and quantify dopamine receptor density in the brain, aiding in the understanding of neurological disorders such as Parkinson's disease, schizophrenia, and addiction. Additionally, it serves as a critical tool in preclinical research to evaluate the efficacy and mechanisms of potential antipsychotic drugs. Its high specificity for dopamine receptors makes it indispensable for exploring dopaminergic pathways and their implications in brain function and disease.