Diphenhydramine (hydrochloride) (Standard) is the analytical standard of Diphenhydramine (hydrochloride). This product is intended for research and analytical applications. Diphenhydramine hydrochloride is a first-generation histamine H1-receptor antagonist with anti-cholinergic effect. Diphenhydramine hydrochloride can across the ovine blood-brain barrier (BBB)[1][2].
