英文别名Formoterol Impurity 58; Formamide, N-[5-[(1R)-1-hydroxy-2-[[(1R)-2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]-2-(phenylmethoxy)phenyl]-; Arformoterol related impurity 10; N-(2-Benzyloxy-5-{(R)-1-hydroxy-2-[(R)-2-(4-methoxy-phenyl)-1-methyl-ethylamino]-ethyl}-phenyl)-formamide