Salbutamol EP Impurity B HCl;Salbutamol impurity 2/Salbutamol EP Impurity B HCl/α-[[(1,1-Dimethylethyl)amino]methyl]-4-hydroxy-benzenemethanol hydrochloride;Albuterol EP Impurity B TFA;Salbutamol Impurity B HCl;4-(2-(tert-butylamino)-1-hydroxyethyl)phenol hydrochloride