Used in research settings to study serotonin receptor activity and neurotransmitter behavior in neurological pathways. Commonly employed in pharmacological assays to evaluate the effects of serotonergic compounds on smooth muscle contraction, particularly in isolated tissue preparations. Also utilized in studies related to mood regulation, appetite, and sleep due to its role as a serotonin analog. Stable form for in vitro experiments requiring prolonged serotonin activity without rapid degradation.