Entecavir-impurities | Pharmaffiliates

entecavir and its Impurities

It is a derivative of Etofylline and a Entecavir analog which is also known in the name of nucleoside. It is an antiviral drug used in the treatment of HIV/AIDS.. Reference standards of Entecavir API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below

Displaying 27 results for entecavir Impurities
PA 32 17000

Entecavir - API

Entecavir


  • Catalogue No.:PA 32 17000

  • CAS :

    142217-69-4

  • Molecular Formula : C12H15N5O3

  • Molecular Weight : 277.28

PA STI 005510

5-[[2-Amino-5-[2-(4-chlorophenyl)diazenyl]-6-methoxy-4-pyrimidinyl]amino]-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol

5-[[2-Amino-5-[2-(4-chlorophenyl)diazenyl]-6-methoxy-4-pyrimidinyl]amino]-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol


  • Catalogue No.:PA STI 005510

  • CAS :

    NA

  • Molecular Formula : C31H33ClN6O4

  • Molecular Weight : 589.08

PA STI 005520

5-[[2-Amino-5-[2-(4-chlorophenyl)diazenyl]-6-methoxy-4-pyrimidinyl]amino-13C2, 15N]-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol

5-[[2-Amino-5-[2-(4-chlorophenyl)diazenyl]-6-methoxy-4-pyrimidinyl]amino-13C2, 15N]-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol


  • Catalogue No.:PA STI 005520

  • CAS :

    NA

  • Molecular Formula : C2913C2H33ClN515NO4

  • Molecular Weight : 592.06

PA STI 005530

5-[(2-Amino-6-chloro-4-pyrimidinyl-13C2)amino]-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]cyclopentanol

5-[(2-Amino-6-chloro-4-pyrimidinyl-13C2)amino]-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]cyclopentanol


  • Catalogue No.:PA STI 005530

  • CAS :

    NA

  • Molecular Formula : C2213C2H27ClN4O3

  • Molecular Weight : 456.93

PA STI 005690

(1S,2S,3S,5S)-5-((2-Amino-6-chloro-5-((E)-(4-chlorophenyl)diazenyl)pyrimidin-4-yl)amino-15N)-3-(benzyloxy)-2-((benzyloxy)methyl)cyclopentan-1-ol-1,2-13C2

(1S,2S,3S,5S)-5-((2-Amino-6-chloro-5-((E)-(4-chlorophenyl)diazenyl)pyrimidin-4-yl)amino-15N)-3-(benzyloxy)-2-((benzyloxy)methyl)cyclopentan-1-ol-1,2-13C2


  • Catalogue No.:PA STI 005690

  • CAS :

    1207872-65-8

  • Molecular Formula : C2813C2H30Cl2N515NO3

  • Molecular Weight : 596.48

PA STI 006150

(1S,2S,3S,5S)-5-(2-Amino-6-methoxy-9H-purin-9-yl)-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol-13C2,15N

(1S,2S,3S,5S)-5-(2-Amino-6-methoxy-9H-purin-9-yl)-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol-13C2,15N


  • Catalogue No.:PA STI 006150

  • CAS :

    NA

  • Molecular Formula : C2413C2H29N415NO4

  • Molecular Weight : 478.52

PA STI 037090

Entecavir-13C2,15N

Entecavir-13C2,15N


  • Catalogue No.:PA STI 037090

  • CAS :

    1329796-53-3

  • Molecular Formula : C1013C2H15N415NO3

  • Molecular Weight : 280.26

PA STI 037100

Entecavir-d2

Entecavir-d2


  • Catalogue No.:PA STI 037100

  • CAS :

    NA

  • Molecular Formula : C12H13D2N5O3

  • Molecular Weight : 279.29

PA STI 037110

Entecavir-13C2,15N 3''-O-β-D-Glucuronide

Entecavir-13C2,15N 3''-O-β-D-Glucuronide


  • Catalogue No.:PA STI 037110

  • CAS :

    NA

  • Molecular Formula : C1713C2H24N315NO9

  • Molecular Weight : 455.39

PA STI 059490

5-[(4-Methoxyphenyl)-diphenylmethylamino-6-methoxy-9H-purin-9-yl]-13C2, 15N-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol

5-[(4-Methoxyphenyl)-diphenylmethylamino-6-methoxy-9H-purin-9-yl]-13C2, 15N-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol


  • Catalogue No.:PA STI 059490

  • CAS :

    NA

  • Molecular Formula : C4413C2H45N415NO5

  • Molecular Weight : 750.86

PAI 05 004010

((1R,3S,5S)-5-Acetoxy-3-(2-amino-6-oxo-1H-purin-9(6H)-yl)-2-methylenecyclopentyl)methyl Acetate

((1R,3S,5S)-5-Acetoxy-3-(2-amino-6-oxo-1H-purin-9(6H)-yl)-2-methylenecyclopentyl)methyl Acetate


  • Catalogue No.:PAI 05 004010

  • CAS :

    NA

  • Molecular Formula : C16H19N5O5

  • Molecular Weight : 361.35

PAI 05 004020

((1R,3S,5S)-5-Acetoxy-3-(2-amino-8-bromo-6-oxo-1H-purin-9(6H)-yl)-2-methylenecyclopentyl)methyl Acetate

((1R,3S,5S)-5-Acetoxy-3-(2-amino-8-bromo-6-oxo-1H-purin-9(6H)-yl)-2-methylenecyclopentyl)methyl Acetate


  • Catalogue No.:PAI 05 004020

  • CAS :

    NA

  • Molecular Formula : C16H18BrN5O5

  • Molecular Weight : 440.25

PA 32 0171000

[1S-(1α,2α,3β,5α)]-3-(Phenylmethoxy)-2-[(phenylmethoxy)methyl]-6-oxabicyclo[3.1.0]hexane

[1S-(1α,2α,3β,5α)]-3-(Phenylmethoxy)-2-[(phenylmethoxy)methyl]-6-oxabicyclo[3.1.0]hexane


  • Catalogue No.:PA 32 0171000

  • CAS :

    110567-22-1

  • Molecular Formula : C20H22O3

  • Molecular Weight : 310.39

PA 32 0171001

(1S,2R)-2-((Benzyloxy)methyl)cyclopent-3-enol

(1S,2R)-2-((Benzyloxy)methyl)cyclopent-3-enol


  • Catalogue No.:PA 32 0171001

  • CAS :

    110567-21-0

  • Molecular Formula : C13H16O2

  • Molecular Weight : 204.27

PA 32 0171002

2-amino-9-((1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-8-methoxy-1,9-dihydro-6H-purin-6-one

2-amino-9-((1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-8-methoxy-1,9-dihydro-6H-purin-6-one


  • Catalogue No.:PA 32 0171002

  • CAS :

    2203740-23-0

  • Molecular Formula : C13H17N5O4

  • Molecular Weight : 307.31

PA 32 0171003

2-amino-9-((3aR,4R,6S,6aS)-3a,6-dihydroxyhexahydro-1H-cyclopenta[c]furan-4-yl)-1,9-dihydro-6H-purin-6-one

2-amino-9-((3aR,4R,6S,6aS)-3a,6-dihydroxyhexahydro-1H-cyclopenta[c]furan-4-yl)-1,9-dihydro-6H-purin-6-one


  • Catalogue No.:PA 32 0171003

  • CAS :

    1391053-94-3

  • Molecular Formula : C12H15N5O4

  • Molecular Weight : 293.28

PA 32 0171004

2-amino-9-((1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-7,9-dihydro-1H-purine-6,8-dione

2-amino-9-((1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-7,9-dihydro-1H-purine-6,8-dione


  • Catalogue No.:PA 32 0171004

  • CAS :

    2204369-23-1

  • Molecular Formula : C12H15N5O4

  • Molecular Weight : 293.28

PA 32 0171005

(1S,2S,3S,5S)-3-(benzyloxy)-5-(6-(benzyloxy)-2-(((4-methoxyphenyl)diphenylmethyl)amino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-ol

(1S,2S,3S,5S)-3-(benzyloxy)-5-(6-(benzyloxy)-2-(((4-methoxyphenyl)diphenylmethyl)amino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-ol


  • Catalogue No.:PA 32 0171005

  • CAS :

    142217-78-5

  • Molecular Formula : C52H49N5O5

  • Molecular Weight : 823.99

PA 32 0171006

(2R,3S,5S)-3-(benzyloxy)-5-(6-(benzyloxy)-2-(((4-methoxyphenyl)diphenylmethyl)amino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-one

(2R,3S,5S)-3-(benzyloxy)-5-(6-(benzyloxy)-2-(((4-methoxyphenyl)diphenylmethyl)amino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-one


  • Catalogue No.:PA 32 0171006

  • CAS :

    142217-79-6

  • Molecular Formula : C52H47N5O5

  • Molecular Weight : 821.98

PA 32 0171007

6-(benzyloxy)-9-((1S,3R,4S)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-N-((4-methoxyphenyl)diphenylmethyl)-9H-purin-2-amine

6-(benzyloxy)-9-((1S,3R,4S)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-N-((4-methoxyphenyl)diphenylmethyl)-9H-purin-2-amine


  • Catalogue No.:PA 32 0171007

  • CAS :

    142217-80-9

  • Molecular Formula : C53H49N5O4

  • Molecular Weight : 820.01

PA 32 0171008

(Methoxy(4-methoxyphenyl)methylene)dibenzene

(Methoxy(4-methoxyphenyl)methylene)dibenzene


  • Catalogue No.:PA 32 0171008

  • CAS :

    84868-56-4

  • Molecular Formula : C21H20O2

  • Molecular Weight : 304.39

PA 32 0171009

(1S,2S,3R,5R)-3-(benzyloxy)-5-(6-(benzyloxy)-2-(((4-methoxyphenyl)diphenylmethyl)amino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-ol

(1S,2S,3R,5R)-3-(benzyloxy)-5-(6-(benzyloxy)-2-(((4-methoxyphenyl)diphenylmethyl)amino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-ol


  • Catalogue No.:PA 32 0171009

  • CAS :

    1354695-74-1

  • Molecular Formula : C52H49N5O5

  • Molecular Weight : 823.99

PA 32 0171010

2-Amino-9-((1S,3R,4R)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-1,9-dihydro-6H-purin-6-one

2-Amino-9-((1S,3R,4R)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-1,9-dihydro-6H-purin-6-one


  • Catalogue No.:PA 32 0171010

  • CAS :

    1354695-85-4

  • Molecular Formula : C26H27N5O3

  • Molecular Weight : 457.53

PA 32 0171011

6-(Benzyloxy)-9-((1S,3R,4S)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-N-trityl-9H-purin-2-amine

6-(Benzyloxy)-9-((1S,3R,4S)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-N-trityl-9H-purin-2-amine


  • Catalogue No.:PA 32 0171011

  • CAS :

    1661867-19-1

  • Molecular Formula : C52H47N5O3

  • Molecular Weight : 789.98

PA 32 0171012

(1S,2S,3S,5S)-3-(Benzyloxy)-5-(6-(benzyloxy)-2-(tritylamino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-ol

(1S,2S,3S,5S)-3-(Benzyloxy)-5-(6-(benzyloxy)-2-(tritylamino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-ol


  • Catalogue No.:PA 32 0171012

  • CAS :

    1345339-53-8

  • Molecular Formula : C51H47N5O4

  • Molecular Weight : 793.97

PA 32 0171013

(1S,2S,3S,5S)-5-(2-amino-6-(benzyloxy)-9H-purin-9-yl)-3-(benzyloxy)-2-((benzyloxy)methyl)cyclopentan-1-ol

(1S,2S,3S,5S)-5-(2-amino-6-(benzyloxy)-9H-purin-9-yl)-3-(benzyloxy)-2-((benzyloxy)methyl)cyclopentan-1-ol


  • Catalogue No.:PA 32 0171013

  • CAS :

    142217-77-4

  • Molecular Formula : C32H33N5O4

  • Molecular Weight : 551.65

PA 32 0171015

4-(3-(4-cyano-3-(trifluoromethyl)phenyl)thioureido)-2-fluoro-N-methylbenzamide

4-(3-(4-cyano-3-(trifluoromethyl)phenyl)thioureido)-2-fluoro-N-methylbenzamide


  • Catalogue No.:PA 32 0171015

  • CAS :

    1798807-39-2

  • Molecular Formula : C17H12F4N4OS

  • Molecular Weight : 396.36