Formoterol fumarate Formamide, N-[2-hydroxy-5-[1-hydroxy-2-[[2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]phenyl]-, [S-(R*,S*)]- Formoterol O-β-D-Glucuronide Formoterol EP Impurity F (S,S)-Formoterol ForMoterol-IMpurity-B Formoterol EP Impurity C 1-(4-Methoxyphenyl)-2-benzylaminopropane Formoterol Impurity 13 Formoterol EP Impurity D (R)-2-(4-Methoxyphenyl)-1-methylethanamine Formoterol Fumarate Dihydrate EP Impurity I 2-Bromo-4'-Benzyloxy-3'-nitroacetophenone Formoterol EP Impurity E Formamide, N-[2-hydroxy-5-[1-hydroxy-2-[[2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]phenyl]-, [R-(R*,S*)]- 4-methoxyamphetamine hydrochloride (R,R)-Formoterol Formamide, N-[2-(4-methoxyphenyl)-1-methylethyl]-