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 45 results for entecavir Impurities
PA 32 17000

Entecavir

Entecavir

  • Catalogue No.:PA 32 17000

  • CAS :

    142217-69-4

  • Molecular Formula : C12H15N5O3

  • Molecular Weight : 277.28

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PA 05 57510

ent-Entecavir

ent-Entecavir

  • Catalogue No.:PA 05 57510

  • CAS :

    188399-46-4

  • Molecular Formula : C12H15N5O3

  • Molecular Weight : 277.28

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PA 05 57520

Furoentecavir

Furoentecavir

  • Catalogue No.:PA 05 57520

  • CAS :

    1984788-96-6

  • Molecular Formula : C12H15N5O4

  • Molecular Weight : 293.28

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PA 05 57560

4-Dimethylsilyl Entecavir

4-Dimethylsilyl Entecavir

  • Catalogue No.:PA 05 57560

  • CAS :

    870614-82-7

  • Molecular Formula : C14H21N5O3Si

  • Molecular Weight : 335.43

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PA 05 57570

Cyclopentanemethanol, 5-[2-amino-6-(phenylmethoxy)-9H-purin-9-yl]-3-(dimethylphenylsilyl)-1-hydroxy-2-[(phenylmethoxy)methyl]-, (1S,2S,3S,5S)-

Cyclopentanemethanol, 5-[2-amino-6-(phenylmethoxy)-9H-purin-9-yl]-3-(dimethylphenylsilyl)-1-hydroxy-2-[(phenylmethoxy)methyl]-, (1S,2S,3S,5S)-

  • Catalogue No.:PA 05 57570

  • CAS :

    649761-23-9

  • Molecular Formula : C34H39N5O4Si

  • Molecular Weight : 609.79

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PA 05 57580

O6-Benzylguanine

O6-Benzylguanine

  • Catalogue No.:PA 05 57580

  • CAS :

    19916-73-5

  • Molecular Formula : C12H11N5O

  • Molecular Weight : 241.25

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PA 05 57590

(1R,3R,4R)-Entecavir

(1R,3R,4R)-Entecavir

  • Catalogue No.:PA 05 57590

  • CAS :

    1367369-76-3

  • Molecular Formula : C12H15N5O3

  • Molecular Weight : 277.28

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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

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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

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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

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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

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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

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PA STI 037100

Entecavir-d2

Entecavir-d2

  • Catalogue No.:PA STI 037100

  • CAS :

    NA

  • Molecular Formula : C12H13D2N5O3

  • Molecular Weight : 279.29

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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

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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

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PA EPY0001800

Entecavir monohydrate (Y0001800)

Entecavir monohydrate (Y0001800)

  • Catalogue No.:PA EPY0001800

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA EPY0001802

Entecavir impurity F (Y0001802)

Entecavir impurity F (Y0001802)

  • Catalogue No.:PA EPY0001802

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA EPY0001801

Entecavir for system suitability (Y0001801)

Entecavir for system suitability (Y0001801)

  • Catalogue No.:PA EPY0001801

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1235966

Entecavir Monohydrate (1235966)

Entecavir Monohydrate (1235966)

  • Catalogue No.:PA USP1235966

  • CAS :

    209216-23-9

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1235977

Entecavir Related Compound A (9-[(1S,3R,4S)-4-Dimethylphenylsilyl-3-(benzyloxymethyl)-2-methylenecy (1235977)

Entecavir Related Compound A (9-[(1S,3R,4S)-4-Dimethylphenylsilyl-3-(benzyloxymethyl)-2-methylenecy (1235977)

  • Catalogue No.:PA USP1235977

  • CAS :

    649761-24-0

  • Molecular Formula : NA

  • Molecular Weight : NA

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PA USP1235988

Entecavir System Suitability Mixture (A mixture containing entecavir 1-epimer (0.1%), entecavir (99 (1235988)

Entecavir System Suitability Mixture (A mixture containing entecavir 1-epimer (0.1%), entecavir (99 (1235988)

  • Catalogue No.:PA USP1235988

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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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

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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

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PA 05 57600

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

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

  • Catalogue No.:PA 05 57600

  • CAS :

    NA

  • Molecular Formula : C12H15N5O4

  • Molecular Weight : 293.28

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PA 05 57620

3',5'-di-O-Benzyl Entecavir

3',5'-di-O-Benzyl Entecavir

  • Catalogue No.:PA 05 57620

  • CAS :

    142217-81-0

  • Molecular Formula : C26H27N5O3

  • Molecular Weight : 457.53

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PA 05 57630

ent-Entecavir-di-o-benzyl Ether

ent-Entecavir-di-o-benzyl Ether

  • Catalogue No.:PA 05 57630

  • CAS :

    1354695-82-1

  • Molecular Formula : C26H27N5O3

  • Molecular Weight : 457.53

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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PA 32 0171017

(1S,2S,3S,5S)-5-[[2-Amino-5-[2-(4-chlorophenyl)diazenyl]-6-methoxy-4-pyrimidinyl]amino]-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol

(1S,2S,3S,5S)-5-[[2-Amino-5-[2-(4-chlorophenyl)diazenyl]-6-methoxy-4-pyrimidinyl]amino]-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-cyclopentanol

  • Catalogue No.:PA 32 0171017

  • CAS :

    888015-89-2

  • Molecular Formula : C31H33ClN6O4

  • Molecular Weight : 589.08

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PA 32 0171016

(S)-2-Amino-9-(3-(hydroxymethyl)-2-methylenecyclopent-3-en-1-yl)-1,9-dihydro-6H-purin-6-one

(S)-2-Amino-9-(3-(hydroxymethyl)-2-methylenecyclopent-3-en-1-yl)-1,9-dihydro-6H-purin-6-one

  • Catalogue No.:PA 32 0171016

  • CAS :

    NA

  • Molecular Formula : C12H13N5O2

  • Molecular Weight : 259.27

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PA 32 0171018

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

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

  • Catalogue No.:PA 32 0171018

  • CAS :

    1354695-84-3

  • Molecular Formula : C26H27N5O3

  • Molecular Weight : 457.53

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PA 32 0171019

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

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

  • Catalogue No.:PA 32 0171019

  • CAS :

    1367369-81-0

  • Molecular Formula : C12H15N5O3

  • Molecular Weight : 277.28

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CPHI INDIA- 28, 30 November