olopatadine and its Impurities
Olopatadine is an antihistamine drug used in the form of eye drops and nasal drops to treatallergic symptoms like inflammation, itching, watering, and burning. It is also an anticholinergic and mast cell stabilizer.Reference standards of Olopatadine API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


(Z)-Isopropyl 2-(11-(3-(dimethylamino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)Acetate
(Z)-Isopropyl 2-(11-(3-(dimethylamino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)Acetate
Catalogue No.:PA 15 25540
CAS :
1206456-44-1
Molecular Formula : C24H29NO3
Molecular Weight : 379.49

![(Z)-3-(2-(2-Butoxy-2-oxoethyl)dibenzo[b,e]oxepin-1 PA 15 25570](https://www.pharmaffiliates.com/pimages/PA1525570.jpg)
(Z)-3-(2-(2-Butoxy-2-oxoethyl)dibenzo[b,e]oxepin-11(6H)-ylidene)-N,N-dimethylpropan-1-aminium Chloride
(Z)-3-(2-(2-Butoxy-2-oxoethyl)dibenzo[b,e]oxepin-11(6H)-ylidene)-N,N-dimethylpropan-1-aminium Chloride
Catalogue No.:PA 15 25570
CAS :
NA
Molecular Formula : C25H32ClNO3
Molecular Weight : 429.98


(Z)-2-(11-(3-(Dimethylamino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)-N,N-dimethylacetamide Hydrochloride
(Z)-2-(11-(3-(Dimethylamino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)-N,N-dimethylacetamide Hydrochloride
Catalogue No.:PA 15 25620
CAS :
NA
Molecular Formula : C23H29ClN2O2
Molecular Weight : 400.94


Olopatadine Related Compound B ((Z)-3-{2-(carboxymethyl)dibenzo[b,e]oxepin-11(6H)-ylidene}-N,N-dime (1478425)
Olopatadine Related Compound B ((Z)-3-{2-(carboxymethyl)dibenzo[b,e]oxepin-11(6H)-ylidene}-N,N-dime (1478425)
Catalogue No.:PA USP1478425
CAS :
173174-07-7
Molecular Formula : NA
Molecular Weight : NA


Olopatadine Related Compound C ((11-oxo-6,11-dihydrodibenzo[b,e]oxepin-2-yl)acetic acid) (1478436)
Olopatadine Related Compound C ((11-oxo-6,11-dihydrodibenzo[b,e]oxepin-2-yl)acetic acid) (1478436)
Catalogue No.:PA USP1478436
CAS :
55453-87-7
Molecular Formula : NA
Molecular Weight : NA


(Z)-2-(11-(3-(Dimethylamino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)-N,N-dimethylacetamide
(Z)-2-(11-(3-(Dimethylamino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)-N,N-dimethylacetamide
Catalogue No.:PA 15 25630
CAS :
872041-02-6
Molecular Formula : C23H28N2O2
Molecular Weight : 364.49


(Z)-2-Hydroxy-2-(11-(3-(methyl(nitroso)amino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)acetic Acid
(Z)-2-Hydroxy-2-(11-(3-(methyl(nitroso)amino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)acetic Acid
Catalogue No.:PA 15 0611011
CAS :
NA
Molecular Formula : C20H20N2O5
Molecular Weight : 368.39


Methyl (Z)-2-(11-(3-(((1-chloroethoxy)carbonyl)(methyl)amino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)acetate
Methyl (Z)-2-(11-(3-(((1-chloroethoxy)carbonyl)(methyl)amino)propylidene)-6,11-dihydrodibenzo[b,e]oxepin-2-yl)acetate
Catalogue No.:PAI 15 061003
CAS :
NA
Molecular Formula : C24H26ClNO5
Molecular Weight : 443.92


11-(3-(Dimethylamino)propylidene)-6,11-dihydrodibenzo[b,e]oxepine-2-carbaldehyde Hydrochloride
11-(3-(Dimethylamino)propylidene)-6,11-dihydrodibenzo[b,e]oxepine-2-carbaldehyde Hydrochloride
Catalogue No.:PA 15 0611014
CAS :
2519517-78-1
Molecular Formula : C20H22ClNO2
Molecular Weight : 343.85