Used primarily as a pharmacological research tool to study histamine receptors, particularly the H3 receptor subtype. It acts as a metabolite of histamine and helps in understanding histaminergic neurotransmission in the central nervous system. Commonly employed in in vitro and in vivo experiments to assess receptor binding, activation, and modulation. Also utilized in studies related to neurotransmitter release, cognitive function, and sleep-wake cycles due to the role of histamine in these processes. Its stability in salt form makes it suitable for use in biological assays requiring prolonged activity.