AHN 1-055 hydrochloride is a selective inhibitor of the dopamine transporter (DAT), primarily used in research settings to study dopamine reuptake mechanisms and neurotransmission. It aids in investigating biochemical pathways related to reward, addiction, and motor control, with applications crucial in understanding disease mechanisms in neuroscience, such as cocaine dependence and Parkinson's disease. It helps identify potential therapeutic targets and is employed in pharmacological studies to evaluate drug efficacy and safety profiles in animal models.