formoterol and its Impurities
Formoterol is used as a long-term treatment to prevent or decrease wheezing and trouble breathing caused by asthma or ongoing lung disease. It is also known as eformoterol.Reference standards of Formoterol API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
 
	
			                                   
																				N-(5-((S)-2-(Benzyl((S)-1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-(benzyloxy)phenyl)formamide
N-(5-((S)-2-(Benzyl((S)-1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-(benzyloxy)phenyl)formamide
- Catalogue No.:PA 06 45530 
- CAS : - 143687-23-4
- Molecular Formula : C33H36N2O4 
- Molecular Weight : 524.65 
 
	
			                                   
																				N-(5-((1S)-2-(Benzyl((1S)-2-(4-Methoxyphenyl)-1-Methylethyl)Amino)-1-Hydroxyethyl)-2-HydroxyPhenyl)Formamide
N-(5-((1S)-2-(Benzyl((1S)-2-(4-Methoxyphenyl)-1-Methylethyl)Amino)-1-Hydroxyethyl)-2-HydroxyPhenyl)Formamide
- Catalogue No.:PA 06 45560 
- CAS : - 67346-67-2
- Molecular Formula : C26H30N2O4 
- Molecular Weight : 434.53 
 
	
			                                   
																				N-(5-((R)-2-(Benzyl((R)-1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-hydroxyphenyl)formamide
N-(5-((R)-2-(Benzyl((R)-1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-hydroxyphenyl)formamide
- Catalogue No.:PA 06 45570 
- CAS : - 1337876-26-2
- Molecular Formula : C26H30N2O4 
- Molecular Weight : 434.53 
 
	
			                                   
																				N-[2-Hydroxy-5-[(1R)-1-hydroxy-2-[[(1R)-2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl] phenyl]acetamide
N-[2-Hydroxy-5-[(1R)-1-hydroxy-2-[[(1R)-2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl] phenyl]acetamide
- Catalogue No.:PA 06 45620 
- CAS : - NA
- Molecular Formula : C20H26N2O4 
- Molecular Weight : 358.44 
 
	
			                                   
																				N-(5-((R)-2-(Benzyl((R)-1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-(benzyloxy)phenyl)formamide
N-(5-((R)-2-(Benzyl((R)-1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-(benzyloxy)phenyl)formamide
- Catalogue No.:PA 06 45640 
- CAS : - 188690-83-7
- Molecular Formula : C33H36N2O4 
- Molecular Weight : 524.66 
 
	
			                                   
																				α-[[[2-(4-Methoxyphenyl)-1-methylethyl](phenylmethyl)amino]methyl]-3-nitro-4-(phenylmethoxy)benzenemethanol
α-[[[2-(4-Methoxyphenyl)-1-methylethyl](phenylmethyl)amino]methyl]-3-nitro-4-(phenylmethoxy)benzenemethanol
- Catalogue No.:PAI 06 013040 
- CAS : - 43229-67-0
- Molecular Formula : C32H34N2O5 
- Molecular Weight : 526.63 
 
	
			                                   
																				3-Amino-α-[[[2-(4-methoxyphenyl)-1-methylethyl](phenylmethyl)amino]methyl]-4-(phenylmethoxy)benzenemethanol
3-Amino-α-[[[2-(4-methoxyphenyl)-1-methylethyl](phenylmethyl)amino]methyl]-4-(phenylmethoxy)benzenemethanol
- Catalogue No.:PAI 06 013050 
- CAS : - 43229-68-1
- Molecular Formula : C32H36N2O3 
- Molecular Weight : 496.65 
 
	
			                                   
																				(1R)-1-(4-(Benzyloxy)-3-nitrophenyl)-2-(((R)-1-(4-methoxyphenyl)propan-2-yl)(1-phenylethyl)amino)ethan-1-ol
(1R)-1-(4-(Benzyloxy)-3-nitrophenyl)-2-(((R)-1-(4-methoxyphenyl)propan-2-yl)(1-phenylethyl)amino)ethan-1-ol
- Catalogue No.:PA 06 0451016 
- CAS : - NA
- Molecular Formula : C33H36N2O5 
- Molecular Weight : 540.66 
 
	
			                                   
																				(1R)-1-(3-Amino-4-(benzyloxy)phenyl)-2-(((R)-1-(4-methoxyphenyl)propan-2-yl)(1-phenylethyl)amino)ethan-1-ol
(1R)-1-(3-Amino-4-(benzyloxy)phenyl)-2-(((R)-1-(4-methoxyphenyl)propan-2-yl)(1-phenylethyl)amino)ethan-1-ol
- Catalogue No.:PA 06 0451017 
- CAS : - NA
- Molecular Formula : C33H38N2O3 
- Molecular Weight : 510.68 
 
	
			                                   
																				N-(2-(Benzyloxy)-5-((1R)-1-hydroxy-2-(((R)-1-(4-methoxyphenyl)propan-2-yl)(1-phenylethyl)amino)ethyl)phenyl)formamide
N-(2-(Benzyloxy)-5-((1R)-1-hydroxy-2-(((R)-1-(4-methoxyphenyl)propan-2-yl)(1-phenylethyl)amino)ethyl)phenyl)formamide
- Catalogue No.:PA 06 0451018 
- CAS : - NA
- Molecular Formula : C34H38N2O4 
- Molecular Weight : 538.69 
 
	
			                                   
																				N-(2-Hydroxy-5-(1-hydroxy-2-((1-(4-methoxyphenyl)propan-2-yl)amino)ethyl)phenyl)-N-methylformamide
N-(2-Hydroxy-5-(1-hydroxy-2-((1-(4-methoxyphenyl)propan-2-yl)amino)ethyl)phenyl)-N-methylformamide
- Catalogue No.:PA 06 0451020 
- CAS : - NA
- Molecular Formula : C20H26N2O4 
- Molecular Weight : 358.44 
 
	
			                                   
																				N-(5-(2-(Benzyl(1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-(benzyloxy)phenyl)formamide fumarate
N-(5-(2-(Benzyl(1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-(benzyloxy)phenyl)formamide fumarate
- Catalogue No.:PA 06 0451027 
- CAS : - 43229-69-2
- Molecular Formula : C37H40N2O8 
- Molecular Weight : 640.73 
 
	
			                                   
																				N-(5-(2-(Benzyl(1-(4-methoxy-3-methylphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-(benzyloxy)phenyl)formamide
N-(5-(2-(Benzyl(1-(4-methoxy-3-methylphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-(benzyloxy)phenyl)formamide
- Catalogue No.:PAI 06 013078 
- CAS : - 1616967-25-9
- Molecular Formula : C34H38N2O4 
- Molecular Weight : 538.69 

 
																				 
																				 
																				 
																				 
																				 
																				 
																				![N-[2-(4-Methoxyphenyl)-1-methylethyl]aspartic Acid PA 06 45670](https://www.pharmaffiliates.com/pimages/PA0645670.jpg) 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				 
																				![N-[2-(4-Methoxyphenyl)-1-methylethyl]-formamide PA 06 0451033](https://www.pharmaffiliates.com/pimages/PA060451033.jpg) 
																				 
 
 
 
