CY 208-243 is a selective dopamine D1 receptor agonist, primarily used in research to study the role of dopamine receptors in the central nervous system. It has been instrumental in understanding the mechanisms of dopamine signaling, particularly in the context of motor control, cognition, and reward pathways. In preclinical studies, this compound has been employed to investigate the therapeutic potential of D1 receptor activation in neurological and psychiatric disorders, such as Parkinson's disease and schizophrenia. Additionally, it has been used to explore the effects of dopamine on behavior, memory, and learning in animal models. Its application in research has provided valuable insights into the development of targeted treatments for dopamine-related conditions.