Synonyms : 1-(o-Allylphenoxy)-3-(isopropylamino)-2-propanol, Alfeprol, Alpheprol, Alprenolol Hydrochloride, Aptin, Aptin-Duriles, Aptina, Aptine, Astra Brand of Alprenolol Benzoate, Astra Brand of Alprenolol Hydrochloride, H-56-28, Made Brand of Alprenolol Hydrochloride