Synonyms: Cetirizine Dihydrochloride Imp. F (EP) as Dihydrochloride, Acetic acid, 2-[2-[4-(diphenylmethyl)-1-piperazinyl]ethoxy]-, hydrochloride (1:2), Acetic acid, [2-[4-(diphenylmethyl)-1-piperazinyl]ethoxy]-, dihydrochloride (9CI),[2-[4-(Diphenylmethyl)piperazin-1-yl]ethoxy]acetic Acid Dihydrochloride