Buspirone (CAS 33386-68-0; C₂₁H₃₁N₅O₂) is an anxiolytic pharmaceutical compound primarily used in research for treating anxiety disorders, particularly generalized anxiety disorder (GAD). It acts as a partial agonist at serotonin 5-HT1A receptors and modulates dopamine activity, alleviating symptoms like excessive worry, irritability, and tension without causing significant sedation or dependence, unlike benzodiazepines. This high-purity (≥98%) reference standard, verified by NMR and IR spectroscopy conforming to structure, is intended for laboratory research, analytical standards, pharmaceutical development, or as a synthetic intermediate. Not for human or veterinary therapeutic use.