Celiprolol hydrochloride57470-78-795 % similar Acebutolol37517-30-955 % similar Acebutolol hydrochloride34381-68-553 % similar Levobunolol47141-42-442 % similar Carteolol hydrochloride51781-21-641 % similar Nadolol42200-33-938 % similar 2-Acetyl-4-butyramidophenol40188-45-234 % similar Propafenone54063-53-532 % similar Timolol26839-75-831 % similar Propafenone hydrochloride34183-22-730 % similar