SKF 77434 is primarily used in research settings to study the dopaminergic system in the brain. It acts as a selective dopamine D1 receptor agonist, making it valuable for investigating the role of D1 receptors in various physiological and behavioral processes. Researchers utilize it to explore its effects on motor control, cognition, and reward mechanisms, providing insights into conditions like Parkinson's disease, schizophrenia, and addiction. Its specificity helps in understanding the distinct functions of D1 receptors compared to other dopamine receptor subtypes. Additionally, it serves as a tool for developing potential therapeutic agents targeting dopamine-related disorders.