(-)-Penbutolol 2-Propanol, 1-(2-cyclopentylphenoxy)-3-((1,1-dimethylethyl)amino)-, (S)- 38363-40-5 BRN 4484348 Betapressin CCRIS 2855 HOE 893 HOE 893D Levopenbutol Penbutolol Penbutololum [INN-Latin] S(-)-Penbutolol l-Penbutolol