SKF38393 HCl is primarily used in research settings to study dopamine receptor activity. It acts as a selective D1 dopamine 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 cognition, memory, and motor control, particularly in models of neurological disorders such as Parkinson's disease and schizophrenia. Additionally, it is employed in studies examining the interaction between dopamine pathways and other neurotransmitter systems, contributing to a better understanding of brain function and potential therapeutic targets.