apixaban and its Impurities
Apixaban, sold under the trade name Eliquis among others, is an anticoagulant used to treat and prevent blood clots and to prevent stroke in people with nonvalvular atrial fibrillation.. Reference standards of Apixaban API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below


6-(4-((5-Amino-5-oxopentyl)(nitroso)amino)phenyl)-1-(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide
6-(4-((5-Amino-5-oxopentyl)(nitroso)amino)phenyl)-1-(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide
Catalogue No.:PA 28 0111058
CAS :
NA
Molecular Formula : C25H27N7O5
Molecular Weight : 505.54


3-Carbamoyl-1-(4-methoxyphenyl)-4-(2-(nitroso(4-(2-oxopiperidin-1-yl)phenyl)amino)ethyl)-1H-pyrazole-5-carboxylic Acid
3-Carbamoyl-1-(4-methoxyphenyl)-4-(2-(nitroso(4-(2-oxopiperidin-1-yl)phenyl)amino)ethyl)-1H-pyrazole-5-carboxylic Acid
Catalogue No.:PA 28 0111059
CAS :
NA
Molecular Formula : C25H26N6O6
Molecular Weight : 506.52


1-(4-Methoxyphenyl)-7a-morpholino-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-3a,4,5,6,7,7a-hexahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide
1-(4-Methoxyphenyl)-7a-morpholino-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-3a,4,5,6,7,7a-hexahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide
Catalogue No.:PA 28 0111060
CAS :
NA
Molecular Formula : C29H34N6O5
Molecular Weight : 546.63


1-(4-Methoxyphenyl)-4-(2-(nitroso(4-(2-oxopiperidin-1-yl)phenyl)amino)ethyl)-1H-pyrazole-3,5-dicarboxamide
1-(4-Methoxyphenyl)-4-(2-(nitroso(4-(2-oxopiperidin-1-yl)phenyl)amino)ethyl)-1H-pyrazole-3,5-dicarboxamide
Catalogue No.:PA 28 0111064
CAS :
NA
Molecular Formula : C25H27N7O5
Molecular Weight : 505.54


Ethyl 1-(2-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
Ethyl 1-(2-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
Catalogue No.:PA 28 0111065
CAS :
1801881-20-8
Molecular Formula : C27H28N4O5
Molecular Weight : 488.54


Ethyl 7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-1-phenyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
Ethyl 7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-1-phenyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
Catalogue No.:PA 28 0111066
CAS :
1801881-21-9
Molecular Formula : C26H26N4O4
Molecular Weight : 458.52


6-(4-((4-Carboxybutyl)amino)phenyl)-1-(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic Acid
6-(4-((4-Carboxybutyl)amino)phenyl)-1-(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic Acid
Catalogue No.:PA 28 0111069
CAS :
2264018-89-3
Molecular Formula : C25H26N4O6
Molecular Weight : 478.51


1-(4-Methoxyphenyl)-4-(2-((4-(2-oxopiperidin-1-yl)phenyl)amino)ethyl)-1H-pyrazole-3,5-dicarboxylic Acid
1-(4-Methoxyphenyl)-4-(2-((4-(2-oxopiperidin-1-yl)phenyl)amino)ethyl)-1H-pyrazole-3,5-dicarboxylic Acid
Catalogue No.:PA 28 0111070
CAS :
NA
Molecular Formula : C25H26N4O6
Molecular Weight : 478.51


Ethyl 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-6,7-dihydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
Ethyl 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-6,7-dihydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
Catalogue No.:PA 28 0111074
CAS :
2514951-00-7
Molecular Formula : C27H26N4O5
Molecular Weight : 486.53


1-(4-Methoxyphenyl)-4-(2-((4-(2-oxopiperidin-1-yl)phenyl)amino)ethyl)-1H-pyrazole-3,5-dicarboxamide
1-(4-Methoxyphenyl)-4-(2-((4-(2-oxopiperidin-1-yl)phenyl)amino)ethyl)-1H-pyrazole-3,5-dicarboxamide
Catalogue No.:PA 28 0111077
CAS :
NA
Molecular Formula : C25H28N6O4
Molecular Weight : 476.54


6-(4-((4-Carboxybutyl)(nitroso)amino)phenyl)-1-(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic Acid
6-(4-((4-Carboxybutyl)(nitroso)amino)phenyl)-1-(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic Acid
Catalogue No.:PA 28 0111078
CAS :
NA
Molecular Formula : C25H25N5O7
Molecular Weight : 507.5


1-(2-Methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide
1-(2-Methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide
Catalogue No.:PA 28 0111082
CAS :
1801881-16-2
Molecular Formula : C25H25N5O4
Molecular Weight : 459.51


1-(3-Methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide
1-(3-Methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide
Catalogue No.:PA 28 0111083
CAS :
1801881-18-4
Molecular Formula : C25H25N5O4
Molecular Weight : 459.51