Olaparib and its Impurities
Olaparib is used to treat ovarian cancer in people with a specific gene who have not improved or who have worsened after treatment with at least three other therapies.Reference standards of Olaparib API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


6-Chloro-4-(3-(4-(cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
6-Chloro-4-(3-(4-(cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
Catalogue No.:PA 15 0701001
CAS :
NA
Molecular Formula : C24H22ClFN4O3
Molecular Weight : 468.91


Tert-butyl 4-(2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoyl)piperazine-1-carboxylate
Tert-butyl 4-(2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoyl)piperazine-1-carboxylate
Catalogue No.:PA 15 0701006
CAS :
763114-04-1
Molecular Formula : C25H27FN4O4
Molecular Weight : 466.51


4,4'-(((Piperazine-1,4-dicarbonyl)bis(4-fluoro-3,1-phenylene))bis(methylene))bis(phthalazin-1(2H)-one)
4,4'-(((Piperazine-1,4-dicarbonyl)bis(4-fluoro-3,1-phenylene))bis(methylene))bis(phthalazin-1(2H)-one)
Catalogue No.:PA 15 0701008
CAS :
2250242-62-5
Molecular Formula : C36H28F2N6O4
Molecular Weight : 646.65


(Z)-3-(3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzylidene)isobenzofuran-1(3H)-one
(Z)-3-(3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzylidene)isobenzofuran-1(3H)-one
Catalogue No.:PA 15 0701013
CAS :
2905341-99-1
Molecular Formula : C24H21FN2O4
Molecular Weight : 420.44


4-(3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzyl)-1,2-dihydrophthalazin-1-yl cyclopropanecarboxylate
4-(3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzyl)-1,2-dihydrophthalazin-1-yl cyclopropanecarboxylate
Catalogue No.:PA 15 0701014
CAS :
NA
Molecular Formula : C28H29FN4O4
Molecular Weight : 504.56


4-(3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzoyl)phthalazin-1(2H)-one
4-(3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzoyl)phthalazin-1(2H)-one
Catalogue No.:PA 15 0701015
CAS :
1460272-52-9
Molecular Formula : C24H21FN4O4
Molecular Weight : 448.45


2-((Dimethoxyphosphoryl)((methoxy(3-oxo-1,3-dihydroisobenzofuran-1-yl)phosphoryl)oxy)methyl)benzoic acid
2-((Dimethoxyphosphoryl)((methoxy(3-oxo-1,3-dihydroisobenzofuran-1-yl)phosphoryl)oxy)methyl)benzoic acid
Catalogue No.:PA 15 0701017
CAS :
NA
Molecular Formula : C19H20O10P2
Molecular Weight : 470.31


2-Fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-N-(5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-1H-indazol-3-yl)benzamide
2-Fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-N-(5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-1H-indazol-3-yl)benzamide
Catalogue No.:PA 15 0701020
CAS :
NA
Molecular Formula : C32H22FN7O3
Molecular Weight : 571.57


1,2-bis(4-(2-Fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoyl)piperazin-1-yl)ethane-1,2-dione
1,2-bis(4-(2-Fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoyl)piperazin-1-yl)ethane-1,2-dione
Catalogue No.:PA 15 0701022
CAS :
NA
Molecular Formula : C42H36F2N8O6
Molecular Weight : 786.8


4-((3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorophenyl)(2-oxopyrrolidin-1-yl)methyl)phthalazin-1(2H)-one
4-((3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorophenyl)(2-oxopyrrolidin-1-yl)methyl)phthalazin-1(2H)-one
Catalogue No.:PA 15 0701027
CAS :
NA
Molecular Formula : C28H28FN5O4
Molecular Weight : 517.56


(Z)-2-(2-(3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorophenyl)-1-hydrazineylvinyl)benzoic Acid
(Z)-2-(2-(3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorophenyl)-1-hydrazineylvinyl)benzoic Acid
Catalogue No.:PA 15 0701033
CAS :
2905342-00-7
Molecular Formula : C24H25FN4O4
Molecular Weight : 452.49


(4-(5-((4-Chlorophthalazin-1-yl)methyl)-2-fluorobenzoyl)piperazin-1-yl)(cyclopropyl)methanone
(4-(5-((4-Chlorophthalazin-1-yl)methyl)-2-fluorobenzoyl)piperazin-1-yl)(cyclopropyl)methanone
Catalogue No.:PA 15 0701058
CAS :
NA
Molecular Formula : C24H22ClFN4O2
Molecular Weight : 452.91

![4-(3-(4-(1-(Cyclopropanecarbonyl)-1H-benzo[d][1,2, PA 15 0701075](https://www.pharmaffiliates.com/pimages/PA150701075.jpg)
4-(3-(4-(1-(Cyclopropanecarbonyl)-1H-benzo[d][1,2,3]triazol-4-yl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
4-(3-(4-(1-(Cyclopropanecarbonyl)-1H-benzo[d][1,2,3]triazol-4-yl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
Catalogue No.:PA 15 0701075
CAS :
NA
Molecular Formula : C30H26FN7O3
Molecular Weight : 551.58

![4-(3-(4-(4-(Cyclopropanecarbonyl)-1H-benzo[d][1,2, PA 15 0701076](https://www.pharmaffiliates.com/pimages/PA150701076.jpg)
4-(3-(4-(4-(Cyclopropanecarbonyl)-1H-benzo[d][1,2,3]triazol-5-yl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
4-(3-(4-(4-(Cyclopropanecarbonyl)-1H-benzo[d][1,2,3]triazol-5-yl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
Catalogue No.:PA 15 0701076
CAS :
NA
Molecular Formula : C30H26FN7O3
Molecular Weight : 551.58

![4-(3-(4-(7-(Cyclopropanecarbonyl)-1H-benzo[d][1,2, PA 15 0701077](https://www.pharmaffiliates.com/pimages/PA150701077.jpg)
4-(3-(4-(7-(Cyclopropanecarbonyl)-1H-benzo[d][1,2,3]triazol-5-yl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
4-(3-(4-(7-(Cyclopropanecarbonyl)-1H-benzo[d][1,2,3]triazol-5-yl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
Catalogue No.:PA 15 0701077
CAS :
NA
Molecular Formula : C30H26FN7O3
Molecular Weight : 551.58

![4-(3-(4-((1H-Benzo[d][1,2,3]triazol-4-yl)(cyclopro PA 15 0701078](https://www.pharmaffiliates.com/pimages/PA150701078.jpg)
4-(3-(4-((1H-Benzo[d][1,2,3]triazol-4-yl)(cyclopropyl)methyl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
4-(3-(4-((1H-Benzo[d][1,2,3]triazol-4-yl)(cyclopropyl)methyl)piperazine-1-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one
Catalogue No.:PA 15 0701078
CAS :
NA
Molecular Formula : C30H28FN7O2
Molecular Weight : 537.6

![4-(4-(4-(Cyclopropanecarbonyl)-1H-benzo[d][1,2,3]t PA 15 0701079](https://www.pharmaffiliates.com/pimages/PA150701079.jpg)
4-(4-(4-(Cyclopropanecarbonyl)-1H-benzo[d][1,2,3]triazol-1-yl)-3-(piperazine-1-carbonyl)benzyl)phthalazin-1(2H)-one
4-(4-(4-(Cyclopropanecarbonyl)-1H-benzo[d][1,2,3]triazol-1-yl)-3-(piperazine-1-carbonyl)benzyl)phthalazin-1(2H)-one
Catalogue No.:PA 15 0701079
CAS :
NA
Molecular Formula : C30H27N7O3
Molecular Weight : 533.59