Vilanterol trifenatate503070-58-4100 % similar Vilanterol503068-34-679 % similar Salmeterol89365-50-465 % similar Salmeterol xinafoate94749-08-357 % similar Levalbuterol tartrate661464-94-440 % similar Salbutamol18559-94-938 % similar (-)-Salbutamol34391-04-338 % similar Levalbuterol hydrochloride50293-90-837 % similar α1-[[(1,1-Dimethylethyl)(phenylmethyl)amino]methyl]-4-hydroxy-1,3-benzenedimethanol24085-03-837 % similar Salbutamol sulfate51022-70-936 % similar Salbutamol dimer149222-15-133 % similar α1-[[(1,1-Dimethylethyl)amino]methyl]-4-(phenylmethoxy)-1,3-benzenedimethanol56796-66-833 % similar