Wiktionary
atiprosin
n. An antihypertensive agent.
Wikipedia
Atiprosin
Atiprosin (AY-28,228) is an antihypertensive agent which acts as a selective α-adrenergic receptor antagonist. It also possesses some antihistamine activity, though it is some 15-fold weaker in this regard than as an alpha blocker. It was never marketed.