Fenoterol & Fenoterol Hydrobromide

1-(3,5-Dihydroxyphenyl)-2-[[1-(4-hydroxybenzyl)ethyl]amino]ethanol

1-(3,5-Dihydroxyphenyl)-2-(p-hydroxy-α-methylphenethylamino)ethanol

3,5-Dihydroxy-α-[p-hydroxy-α-methylphenethylamino]methylbenzyl alcohol