Penfluridol is a synthetic diphenylbutylpiperidine derivative and a potent long-acting antipsychotic agent. It is primarily used in the management of chronic schizophrenia and other psychotic disorders by acting as a selective dopamine D2 receptor antagonist, helping to alleviate symptoms such as hallucinations, delusions, and disorganized thinking. This high-purity (≥99%) chemical reagent is supplied as a white to off-white crystalline powder and is commonly employed in pharmaceutical research, drug development, and as an active pharmaceutical ingredient (API) in formulations. Its extended half-life allows for weekly dosing in clinical applications, improving patient compliance.