Fenoterol STD-5-[1-hydroxy-2-[1-(4-hydroxyphenyl)propan-2-ylamino]ethyl]benzene-1,3-diol; (1RS)-1-(3,5-Dihydroxyphenyl)-2-[[(1RS)-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethanol; 5-(1-hydroxy-2-((1-(4-hydroxyphenyl)propan-2-yl)amino)ethyl)benzene-1,3-diol; 1,3-Benzenediol, 5-[1-hydroxy-2-[[2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]; Benzyl alcohol, 3,5-dihydroxy-α-[[(p-hydroxy-α-methylphenethyl)amino]methyl]; 1-(3,5-Dihydroxyphenyl)-1-hydroxy-2-[1-(4-hydroxyphenyl)isopropyl]aminoethane; 1-(3,5-Dihydroxyphenyl)-2-[[1-(4-hydroxybenzyl)ethyl]amino]ethanol; 3,5-Dihydroxy-α-[p-hydroxy-α-methylphenethylamino]methylbenzyl alcohol; Phenoterol
Fenoterol EP-Impurity-A-(1RS)-1-(3,5-Dihydroxyphenyl)-2-[[(1SR)-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethanol; 5-[(1RS)-2-[(1SR)-2-(4-hydroxyphenyl)-1-methylethyl]amino-1-hydroxyethyl]benzene-1,3-diol; 1,3-Benzenediol, 5-[(1R)-1-hydroxy-2-[[(1S)-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-, rel; 1,3-Benzenediol, 5-[1-hydroxy-2-[[2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-, (R*,S*)-(±)
Fenoterol EP-Impurity-B-1-(3,5-dihydroxyphenyl)-2-[1-(4-hydroxyphenyl)propan-2-ylamino]ethanone; 1-(3,5-Dihydroxyphenyl)-2-[[(1RS)-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethan-1-one
Fenoterol EP-Impurity-C-5-[1-hydroxy-2-[1-(4-hydroxy-3-methylphenyl)propan-2-ylamino]ethyl]benzene-1,3-diol; 5-[(1RS)-2-[(1RS)-2-(4-Hydroxy-3-methylphenyl)-1-methylethyl]amino-1-hydroxyethyl]benzene-1,3-diol
