lansoprazole and its Impurities
A proton-pump inhibitor , Lansoprazole is used to inhibit acid production in the stomach. It exists as a racemic mixture of detro and levo enantiomers of Lansoprazole. Reference standards of Lansoprazole API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


10-(1H-Benzimidazol-2-ylsulfanyl)-1-methyl-2-(2,2,2-trifluoroethoxy)-4a,5,9b-triazaindeno[2,1-a]indene
10-(1H-Benzimidazol-2-ylsulfanyl)-1-methyl-2-(2,2,2-trifluoroethoxy)-4a,5,9b-triazaindeno[2,1-a]indene
Catalogue No.:PA 12 06600
CAS :
1346598-28-4
Molecular Formula : C23H16F3N5OS
Molecular Weight : 467.47


7-(3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)-7H-benzo[4,5]imidazo[2,1-b]benzo[4,5]imidazo[2,1-d][1,3,5]thiadiazine
7-(3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)-7H-benzo[4,5]imidazo[2,1-b]benzo[4,5]imidazo[2,1-d][1,3,5]thiadiazine
Catalogue No.:PA 12 06670
CAS :
1781244-56-1
Molecular Formula : C23H16F3N5OS
Molecular Weight : 467.47


Lansoprazole Related Compound A (2-[[[3-methyl-4-(2,2,2-triflouroethoxy)-2-pyridyl]methyl]sulfonyl] (1356927)
Lansoprazole Related Compound A (2-[[[3-methyl-4-(2,2,2-triflouroethoxy)-2-pyridyl]methyl]sulfonyl] (1356927)
Catalogue No.:PA USP1356927
CAS :
NA
Molecular Formula : NA
Molecular Weight : NA


Lansoprazole Related Compound B (2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-pyridin-2-yl]methyl]sulfan (1356931)
Lansoprazole Related Compound B (2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-pyridin-2-yl]methyl]sulfan (1356931)
Catalogue No.:PA USP1356931
CAS :
103577-40-8
Molecular Formula : NA
Molecular Weight : NA

![5-(1H-Benzo[d]imidazol-2-yl)-4-methyl-3-(2,2,2-tri PA 12 0061001](https://www.pharmaffiliates.com/pimages/PA120061001.jpg)
5-(1H-Benzo[d]imidazol-2-yl)-4-methyl-3-(2,2,2-trifluoroethoxy)benzo[4,5]imidazo[1,2-b]pyrido[1,2-d][1,2,4]thiadiazine
5-(1H-Benzo[d]imidazol-2-yl)-4-methyl-3-(2,2,2-trifluoroethoxy)benzo[4,5]imidazo[1,2-b]pyrido[1,2-d][1,2,4]thiadiazine
Catalogue No.:PA 12 0061001
CAS :
2749357-09-1
Molecular Formula : C23H16F3N5OS
Molecular Weight : 467.48

![12-(((1H-Benzo[d]imidazol-2-yl)thio)(3-methyl-4-(2 PA 12 0061004](https://www.pharmaffiliates.com/pimages/PA120061004.jpg)
12-(((1H-Benzo[d]imidazol-2-yl)thio)(3-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)-1-methyl-2-(2,2,2-trifluoroethoxy)benzo[4',5']imidazo[2',1':2,3]imidazo[1,5-a]pyridine
12-(((1H-Benzo[d]imidazol-2-yl)thio)(3-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)-1-methyl-2-(2,2,2-trifluoroethoxy)benzo[4',5']imidazo[2',1':2,3]imidazo[1,5-a]pyridine
Catalogue No.:PA 12 0061004
CAS :
NA
Molecular Formula : C32H24F6N6O2S
Molecular Weight : 670.63

![2-(((1H-Benzo[d]imidazol-2-yl)thio)(1-methyl-2-(2, PA 12 0061008](https://www.pharmaffiliates.com/pimages/PA120061008.jpg)
2-(((1H-Benzo[d]imidazol-2-yl)thio)(1-methyl-2-(2,2,2-trifluoroethoxy)benzo[4',5']imidazo[2',1':2,3]imidazo[1,5-a]pyridin-12-yl)methyl)-3-methylpyridin-4-ol
2-(((1H-Benzo[d]imidazol-2-yl)thio)(1-methyl-2-(2,2,2-trifluoroethoxy)benzo[4',5']imidazo[2',1':2,3]imidazo[1,5-a]pyridin-12-yl)methyl)-3-methylpyridin-4-ol
Catalogue No.:PA 12 0061008
CAS :
NA
Molecular Formula : C30H23F3N6O2S
Molecular Weight : 588.61


1-Methyl-12-thioxo-2-(2,2,2-trifluoroethoxy)-12H-benzo[4',5']imidazo[2',1':2,3]imidazo[1,5-a]pyridin-5-ium
1-Methyl-12-thioxo-2-(2,2,2-trifluoroethoxy)-12H-benzo[4',5']imidazo[2',1':2,3]imidazo[1,5-a]pyridin-5-ium
Catalogue No.:PA 12 0061010
CAS :
NA
Molecular Formula : C16H11F3N3OS+
Molecular Weight : 350.34


1-((3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)-2-(((3-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)thio)-1H-benzo[d]imidazole
1-((3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)-2-(((3-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)thio)-1H-benzo[d]imidazole
Catalogue No.:PA 12 0061012
CAS :
1083100-27-9
Molecular Formula : C25H22F6N4O2S
Molecular Weight : 556.53

![(R)-2-(((1H-Benzo[d]imidazol-2-yl)sulfinyl)methyl) PA 12 0061013](https://www.pharmaffiliates.com/pimages/PA120061013.jpg)
(R)-2-(((1H-Benzo[d]imidazol-2-yl)sulfinyl)methyl)-3-methyl-4-(2,2,2-trifluoroethoxy)pyridine 1-oxide
(R)-2-(((1H-Benzo[d]imidazol-2-yl)sulfinyl)methyl)-3-methyl-4-(2,2,2-trifluoroethoxy)pyridine 1-oxide
Catalogue No.:PA 12 0061013
CAS :
1427429-03-5
Molecular Formula : C16H14F3N3O3S
Molecular Weight : 385.36

![2-(((2H-Benzo[d]imidazol-2-ylidene)(3-methyl-4-(2, PA 12 0061018](https://www.pharmaffiliates.com/pimages/PA120061018.jpg)
2-(((2H-Benzo[d]imidazol-2-ylidene)(3-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)thio)-1H-benzo[d]imidazole
2-(((2H-Benzo[d]imidazol-2-ylidene)(3-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)thio)-1H-benzo[d]imidazole
Catalogue No.:PA 12 0061018
CAS :
1683584-88-4
Molecular Formula : C23H16F3N5OS
Molecular Weight : 467.47

![1-(1H-Benzo[d]imidazol-2-yl)-2,3-dimethyl-4-(2,2,2 PA 12 0061024](https://www.pharmaffiliates.com/pimages/PA120061024.jpg)
1-(1H-Benzo[d]imidazol-2-yl)-2,3-dimethyl-4-(2,2,2-trifluoroethoxy)pyridin-1-ium Bromide
1-(1H-Benzo[d]imidazol-2-yl)-2,3-dimethyl-4-(2,2,2-trifluoroethoxy)pyridin-1-ium Bromide
Catalogue No.:PA 12 0061024
CAS :
2730135-15-4
Molecular Formula : C16H15BrF3N3O
Molecular Weight : 402.22

![1-(1H-Benzo[d]imidazol-2-yl)-2,3-dimethyl-4-(2,2,2 PA 12 0061026](https://www.pharmaffiliates.com/pimages/PA120061026.jpg)
1-(1H-Benzo[d]imidazol-2-yl)-2,3-dimethyl-4-(2,2,2-trifluoroethoxy)pyridin-1-ium Chloride
1-(1H-Benzo[d]imidazol-2-yl)-2,3-dimethyl-4-(2,2,2-trifluoroethoxy)pyridin-1-ium Chloride
Catalogue No.:PA 12 0061026
CAS :
2730135-08-5
Molecular Formula : C16H15ClF3N3O
Molecular Weight : 357.76


2-(((3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)sulfonyl)-1-nitroso-1H-benzo[d]imidazole
2-(((3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)sulfonyl)-1-nitroso-1H-benzo[d]imidazole
Catalogue No.:PA 12 0061028
CAS :
NA
Molecular Formula : C16H13F3N4O4S
Molecular Weight : 414.36