Formoterol EP Impurity F

Chemical Name: N-[2-Hydroxy-5-[1-[[2-hydroxy-5-[1-hydroxy-2-[[2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]phenyl]amino]-2-[[2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]phenyl]formamide (as per EP); N-[2-Hydroxy-5-(1-{[2-hydroxy-5-(1-hydroxy-2-{[1-(4-methoxyphenyl)propan-2-yl]amino}ethyl)phenyl]amino}-2-{[1-(4-methoxyphenyl)propan-2-yl]amino}ethyl)phenyl]formamide (as per USP)

Synonym: Formoterol dimer (USP)

Smile: O=CNC1=CC(C(NC2=CC(C(O)CNC(C)CC3=CC=C(OC)C=C3)=CC=C2O)CNC(C)CC4=CC=C(OC)C=C4)=CC=C1O