axitinib and its Impurities
Axitinib is an indazole derivative. It is most commonly marketed under the name Inlyta® and is available in oral formulations._x000D_ Axitinib is a second generation tyrosine kinase inhibitor that works by selectively inhibiting vascular endothelial growth factor receptors (VEGFR-1, VEGFR-2, VEGFR-3).7. Reference standards of Axitinib API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


(E)-N-Methyl-2-((1-(2-(pyridin-2-yl)ethyl)-3-(2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)benzamide
(E)-N-Methyl-2-((1-(2-(pyridin-2-yl)ethyl)-3-(2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)benzamide
Catalogue No.:PA 28 45550
CAS :
1443118-72-6
Molecular Formula : C29H25N5OS
Molecular Weight : 491.61


2,2'-(((2,4-di(Pyridin-2-yl)cyclobutane-1,3-diyl)bis(1H-indazole-3,6-diyl))bis(sulfanediyl))bis(N-methylbenzamide)
2,2'-(((2,4-di(Pyridin-2-yl)cyclobutane-1,3-diyl)bis(1H-indazole-3,6-diyl))bis(sulfanediyl))bis(N-methylbenzamide)
Catalogue No.:PA 28 45690
CAS :
1428728-83-9
Molecular Formula : C44H36N8O2S2
Molecular Weight : 772.94


N-Methyl-2-[[3-[(1E)-2-(1-oxido-2-pyridinyl)ethenyl]-1H-indazol-6-yl]sulfinyl]-benzamide
N-Methyl-2-[[3-[(1E)-2-(1-oxido-2-pyridinyl)ethenyl]-1H-indazol-6-yl]sulfinyl]-benzamide
Catalogue No.:PA 28 45750
CAS :
1348044-24-5
Molecular Formula : C22H18N4O3S
Molecular Weight : 418.47


(Z)-N-Methyl-2-((1-(1-(6-((2-(methylcarbamoyl)phenyl)thio)-1H-indazol-3-yl)-2-(pyridin-2-yl)ethyl)-3-(2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)benzamide
(Z)-N-Methyl-2-((1-(1-(6-((2-(methylcarbamoyl)phenyl)thio)-1H-indazol-3-yl)-2-(pyridin-2-yl)ethyl)-3-(2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)benzamide
Catalogue No.:PA 28 0451000
CAS :
1428728-84-0
Molecular Formula : C44H36N8O2S2
Molecular Weight : 772.95


(E)-6-((2-(Methylcarbamoyl)phenyl)sulfonyl)-3-(2-(1-oxidopyridin-2-yl)vinyl)-1H-indazole 1-oxide
(E)-6-((2-(Methylcarbamoyl)phenyl)sulfonyl)-3-(2-(1-oxidopyridin-2-yl)vinyl)-1H-indazole 1-oxide
Catalogue No.:PA 28 0451004
CAS :
NA
Molecular Formula : C22H18N4O5S
Molecular Weight : 450.47

![N-Methyl-2-[[3-[(1E)-2-(2-pyridinyl)ethenyl]-1-hyd PA 28 0451006](https://www.pharmaffiliates.com/pimages/PA280451006.jpg)
N-Methyl-2-[[3-[(1E)-2-(2-pyridinyl)ethenyl]-1-hydroxymethyl-indazol-6-yl]sulfanyl]-benzamide
N-Methyl-2-[[3-[(1E)-2-(2-pyridinyl)ethenyl]-1-hydroxymethyl-indazol-6-yl]sulfanyl]-benzamide
Catalogue No.:PA 28 0451006
CAS :
2607948-75-2
Molecular Formula : C23H20N4O2S
Molecular Weight : 416.5


2-((1-((3R,4R,5S,6R)-3,4-Dihydroxy-6-(hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)-3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)-N-methylbenzamide
2-((1-((3R,4R,5S,6R)-3,4-Dihydroxy-6-(hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)-3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)-N-methylbenzamide
Catalogue No.:PA 28 0451016
CAS :
NA
Molecular Formula : C34H38N4O11S
Molecular Weight : 710.76


N-(2-((Hydroxy(2-((3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)phenyl)methyl)amino)ethyl)-2-((3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)benzamide
N-(2-((Hydroxy(2-((3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)phenyl)methyl)amino)ethyl)-2-((3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)benzamide
Catalogue No.:PA 28 0451018
CAS :
NA
Molecular Formula : C44H36N8O2S2
Molecular Weight : 772.95


N-(2-((hydroxy(2-((3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)phenyl)methyl)amino)ethyl)-2-((3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)benzamide
N-(2-((hydroxy(2-((3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)phenyl)methyl)amino)ethyl)-2-((3-((E)-2-(pyridin-2-yl)vinyl)-1H-indazol-6-yl)thio)benzamide
Catalogue No.:PA 28 0451001
CAS :
NA
Molecular Formula : C44H36N8O2S2
Molecular Weight : 772.95