Prazosin (hydrochloride) (Standard) is the analytical standard of Prazosin (hydrochloride). This product is intended for research and analytical applications. Prazosin hydrochloride is a well-tolerated, CNS-active α1-adrenergic receptor antagonist for the research of high blood pressure and alcohol use disorders^[1]. Prazosin hydrochloride potently inhibits Norepinephrine (NE)-stimulated 45Ca efflux with an IC₅₀ of 0.15 nM^[2].Prazosin hydrochloride inhibits organic cation transporters OCT-1 and OCT-3 with IC₅₀s of 1.8, and 13 μM, respectively^[3].