escitalopram and its Impurities

A selective serotonin reuptake inhibitor which acts as an antidepressant. It is the (S)- stereoisomer of Citalopram and is used for the treatmet of major depressive disorders, anxiety disorders and OCD. Reference standards of Escitalopram API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 46 results for escitalopram Impurities
Drug Reference Standards & Impurity Synthesis in India
PA 05 43000

Escitalopram

Escitalopram

  • Catalogue No.:PA 05 43000

  • CAS :

    128196-01-0

  • Molecular Formula : C20H21FN2O

  • Molecular Weight : 324.39

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43030

Escitalopram - Impurity C

3-Oxo Citalopram

  • Catalogue No.:PA 05 43030

  • CAS :

    372941-54-3

  • Molecular Formula : C20H19FN2O2

  • Molecular Weight : 338.38

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43040

Escitalopram - Impurity D

rac Desmethyl Citalopram Hydrochloride

  • Catalogue No.:PA 05 43040

  • CAS :

    97743-99-2

  • Molecular Formula : C19H20ClFN2O

  • Molecular Weight : 346.83

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43050

Escitalopram - Impurity E

Citadiol

  • Catalogue No.:PA 05 43050

  • CAS :

    103146-25-4

  • Molecular Formula : C20H23FN2O2

  • Molecular Weight : 342.41

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43060

Escitalopram - Impurity F

(1RS)-1-[3-(Dimethylamino)propyl]-1-hydroxy-1,3-dihydroisobenzofuran-5-carbonitrile

  • Catalogue No.:PA 05 43060

  • CAS :

    2102609-59-4

  • Molecular Formula : C14H18N2O2

  • Molecular Weight : 246.30

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43080

Escitalopram - Impurity H

Citalopram N-Oxide

  • Catalogue No.:PA 05 43080

  • CAS :

    63284-72-0

  • Molecular Formula : C20H21FN2O2

  • Molecular Weight : 340.39

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43090

Escitalopram - Impurity I (Freebase)

4-[(1Z)-4-(Dimethylamino)-1-(4-fluorophenyl)but-1-en-1-yl]-3-(hydroxymethyl)benzonitrile

  • Catalogue No.:PA 05 43090

  • CAS :

    1370643-22-3

  • Molecular Formula : C20H21FN2O

  • Molecular Weight : 324.39

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43100

Escitalopram - Impurity J

p-Tolylsulfonic Acid

  • Catalogue No.:PA 05 43100

  • CAS :

    104-15-4

  • Molecular Formula : C7H8O3S

  • Molecular Weight : 172.2

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43110

Escitalopram - Impurity K

Citalopram R-Isomer

  • Catalogue No.:PA 05 43110

  • CAS :

    128196-02-1

  • Molecular Formula : C20H21FN2O

  • Molecular Weight : 324.39

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43111

Escitalopram - Impurity K (Oxalate Salt)

Citalopram R-Isomer Oxalate Salt

  • Catalogue No.:PA 05 43111

  • CAS :

    219861-53-7

  • Molecular Formula : C22H23FN2O5

  • Molecular Weight : 414.43

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43120

Escitalopram - Impurity L (Freebase)

(1RS)-1-[3-(Dimethylamino)propyl]-1-phenyl-1,3-dihydro-2-benzofuran-5-carbonitrile

  • Catalogue No.:PA 05 43120

  • CAS :

    1026009-77-7

  • Molecular Formula : C20H22N2O

  • Molecular Weight : 306.4

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43121

Escitalopram - Impurity L (Oxalate Salt)

(1RS)-1-[3-(Dimethylamino)propyl]-1-phenyl-1,3-dihydroisobenzofuran-5-carbonitrile Oxalate

  • Catalogue No.:PA 05 43121

  • CAS :

    1093072-86-6

  • Molecular Formula : C22H24N2O5

  • Molecular Weight : 396.44

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43130

Escitalopram - Impurity M

(1RS)-1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-2-benzofuran-5-carboxylic Acid

Drug Reference Standards & Impurity Synthesis in India

  • Catalogue No.:PA 05 43130

  • CAS :

    440121-09-5

  • Molecular Formula : C20H22FNO3

  • Molecular Weight : 343.39

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43510

1-(4-Bromo-2-(hydroxymethyl)phenyl)-4-(dimethylamino)-1-(4-fluorophenyl)butan-1-ol Hydrobromide

1-(4-Bromo-2-(hydroxymethyl)phenyl)-4-(dimethylamino)-1-(4-fluorophenyl)butan-1-ol Hydrobromide

  • Catalogue No.:PA 05 43510

  • CAS :

    NA

  • Molecular Formula : C19H24Br2FNO2

  • Molecular Weight : 477.21

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43520

5-Chloro-3H-2-benzofuran-1-one

5-Chloro-3H-2-benzofuran-1-one

  • Catalogue No.:PA 05 43520

  • CAS :

    54109-03-4

  • Molecular Formula : C8H5ClO2

  • Molecular Weight : 168.58

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43530

(3-(Dimethylamino)propyl)magnesium chloride

(3-(Dimethylamino)propyl)magnesium chloride

  • Catalogue No.:PA 05 43530

  • CAS :

    19070-16-7

  • Molecular Formula : C5H12ClMgN

  • Molecular Weight : 145.91

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Drug Reference Standards & Impurity Synthesis in India
PA STI 037781

Escitalopram-d3

Escitalopram-d3

  • Catalogue No.:PA STI 037781

  • CAS :

    NA

  • Molecular Formula : C20H18D3FN2O

  • Molecular Weight : 327.41

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Drug Reference Standards & Impurity Synthesis in India
PA 05 43540

(S)-4-[4-(Dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)-benzonitrile Di-p-toluoyl-D-tartrate Salt (2:1)

(S)-4-[4-(Dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)-benzonitrile Di-p-toluoyl-D-tartrate Salt (2:1)

  • Catalogue No.:PA 05 43540

  • CAS :

    128173-53-5

  • Molecular Formula : C60H64F2N4O12

  • Molecular Weight : 1071.18

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Drug Reference Standards & Impurity Synthesis in India
PA IPIPRS 142 14

Escitalopram Oxalate (IPRS/142/14)-from IPC

Escitalopram Oxalate (IPRS/142/14)-from IPC

  • Catalogue No.:PA IPIPRS 142 14

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPY0001796

Escitalopram oxalate (Y0001796)

Escitalopram oxalate (Y0001796)

  • Catalogue No.:PA EPY0001796

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPY0001797

Escitalopram for system suitability (Y0001797)

Escitalopram for system suitability (Y0001797)

  • Catalogue No.:PA EPY0001797

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1249406

Escitalopram Oxalate (1249406)

Escitalopram Oxalate (1249406)

  • Catalogue No.:PA USP1249406

  • CAS :

    219861-08-2

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1249417

Escitalopram Related Compound A ((S)-4-[4-dimethylamino-1-(4-fluoropheny)-1-hydroxy-1-butyl]-3-hydr (1249417)

Escitalopram Related Compound A ((S)-4-[4-dimethylamino-1-(4-fluoropheny)-1-hydroxy-1-butyl]-3-hydr (1249417)

  • Catalogue No.:PA USP1249417

  • CAS :

    128173-53-5

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0391000

N-Chloromethyl (S)-Citalopram Chloride

N-Chloromethyl (S)-Citalopram Chloride

  • Catalogue No.:PA 05 0391000

  • CAS :

    NA

  • Molecular Formula : C21H23Cl2FN2O

  • Molecular Weight : 409.33

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431000

Escitalopram Butyryl Impurity

Escitalopram Butyryl Impurity

  • Catalogue No.:PA 05 0431000

  • CAS :

    1803244-58-7

  • Molecular Formula : C25H33FN2O2

  • Molecular Weight : 412.55

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431001

1-Oxo-3H-2-benzofuran-5-carboxamide

1-Oxo-3H-2-benzofuran-5-carboxamide

  • Catalogue No.:PA 05 0431001

  • CAS :

    85118-25-8

  • Molecular Formula : C9H7NO3

  • Molecular Weight : 177.16

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431002

(S)-N-(3-(5-Cyano-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-1-yl)propyl)-N-methylnitrous Amide

(S)-N-(3-(5-Cyano-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-1-yl)propyl)-N-methylnitrous Amide

  • Catalogue No.:PA 05 0431002

  • CAS :

    NA

  • Molecular Formula : C19H18FN3O2

  • Molecular Weight : 339.37

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431003

(1R)-1-((2S)-4-(Dimethylamino)pyrrolidine-2-carbonyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbonitrile oxalate

(1R)-1-((2S)-4-(Dimethylamino)pyrrolidine-2-carbonyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbonitrile oxalate

  • Catalogue No.:PA 05 0431003

  • CAS :

    NA

  • Molecular Formula : C24H24FN3O6

  • Molecular Weight : 469.47

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431004

Escitalopram Acid Impurity

Escitalopram Acid Impurity

  • Catalogue No.:PA 05 0431004

  • CAS :

    1133881-04-5

  • Molecular Formula : C20H22FNO3

  • Molecular Weight : 343.4

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431005

N-Desmethyl Escitalopram

N-Desmethyl Escitalopram

  • Catalogue No.:PA 05 0431005

  • CAS :

    144025-14-9

  • Molecular Formula : C19H19FN2O

  • Molecular Weight : 310.37

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431006

1-Descyano 1-(4-Dimethylamino)oxobutyl Citadiol

1-Descyano 1-(4-Dimethylamino)oxobutyl Citadiol

  • Catalogue No.:PA 05 0431006

  • CAS :

    1433278-32-0

  • Molecular Formula : C25H35FN2O3

  • Molecular Weight : 430.56

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431007

4-[4-(Dimethylamino)-1-oxobutyl]-3-(hydroxymethyl)benzonitrile

4-[4-(Dimethylamino)-1-oxobutyl]-3-(hydroxymethyl)benzonitrile

  • Catalogue No.:PA 05 0431007

  • CAS :

    1433278-33-1

  • Molecular Formula : C14H18N2O2

  • Molecular Weight : 246.31

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Drug Reference Standards & Impurity Synthesis in India
PA STI 089026

Escitalopram D3 oxalate

Escitalopram D3 oxalate

  • Catalogue No.:PA STI 089026

  • CAS :

    NA

  • Molecular Formula : C22H20D3FN2O5

  • Molecular Weight : 417.45

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0430051

Escitalopram - Impurity E (Hydrobromide Salt)

(4RS)-4-[4-Cyano-2-(hydroxymethyl)phenyl]-4-(4-fluorophenyl)-4-hydroxy-N,N-dimethylbutan 1-aminum

  • Catalogue No.:PA 05 0430051

  • CAS :

    103146-26-5

  • Molecular Formula : C20H24BrFN2O2

  • Molecular Weight : 423.33

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431009

4-(4-(Dimethylamino)-1-(4-fluorophenyl)but-1-en-1-yl)-3-(hydroxymethyl)benzonitrile

4-(4-(Dimethylamino)-1-(4-fluorophenyl)but-1-en-1-yl)-3-(hydroxymethyl)benzonitrile

  • Catalogue No.:PA 05 0431009

  • CAS :

    920282-75-3

  • Molecular Formula : C20H21FN2O

  • Molecular Weight : 324.4

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431010

Escitalopram Desfluoro Analogue

Escitalopram Desfluoro Analogue

  • Catalogue No.:PA 05 0431010

  • CAS :

    1346617-30-8

  • Molecular Formula : C20H22N2O

  • Molecular Weight : 306.41

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431011

1-(3-(Dimethylamino)propyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbaldehyde Oxime

1-(3-(Dimethylamino)propyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbaldehyde Oxime

  • Catalogue No.:PA 05 0431011

  • CAS :

    227954-88-3

  • Molecular Formula : C20H23FN2O2

  • Molecular Weight : 342.41

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0430091

Escitalopram - Impurity I (Oxalate Salt)

4-[(1Z)-4-(Dimethylamino)-1-(4-fluorophenyl)but-1-en-1-yl]-3-(hydroxymethyl)benzonitrile Oxalate

  • Catalogue No.:PA 05 0430091

  • CAS :

    NA

  • Molecular Formula : C22H23FN2O5

  • Molecular Weight : 414.43

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431012

1-(4-Fluorophenyl)-1-(3-(methyl(nitroso)amino)propyl)-1,3-dihydroisobenzofuran-5-carboxamide Hydrate

1-(4-Fluorophenyl)-1-(3-(methyl(nitroso)amino)propyl)-1,3-dihydroisobenzofuran-5-carboxamide Hydrate

  • Catalogue No.:PA 05 0431012

  • CAS :

    NA

  • Molecular Formula : C19H22FN3O4

  • Molecular Weight : 375.4

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431013

N-(3-(5-Cyano-1-(4-fluorophenyl)-3-oxo-1,3-dihydroisobenzofuran-1-yl)propyl)-N-methylnitrous Amide

N-(3-(5-Cyano-1-(4-fluorophenyl)-3-oxo-1,3-dihydroisobenzofuran-1-yl)propyl)-N-methylnitrous Amide

  • Catalogue No.:PA 05 0431013

  • CAS :

    NA

  • Molecular Formula : C19H16FN3O3

  • Molecular Weight : 353.35

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431014

1-(4-Fluorophenyl)-1-(3-(methyl(nitroso)amino)propyl)-1,3-dihydroisobenzofuran-5-carboxamide

1-(4-Fluorophenyl)-1-(3-(methyl(nitroso)amino)propyl)-1,3-dihydroisobenzofuran-5-carboxamide

  • Catalogue No.:PA 05 0431014

  • CAS :

    NA

  • Molecular Formula : C19H20FN3O3

  • Molecular Weight : 357.39

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431015

(R)-Desmethyl Citalopram Nitroso Impurity

(R)-Desmethyl Citalopram Nitroso Impurity

  • Catalogue No.:PA 05 0431015

  • CAS :

    NA

  • Molecular Formula : C19H18FN3O2

  • Molecular Weight : 339.37

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431016

(2S,3S)-4-((S)-1-(4-Cyano-2-(hydroxymethyl)phenyl)-4-(dimethylamino)-1-(4-fluorophenyl)butoxy)-2-hydroxy-3-((4-methylbenzoyl)oxy)-4-oxobutanoic Acid

(2S,3S)-4-((S)-1-(4-Cyano-2-(hydroxymethyl)phenyl)-4-(dimethylamino)-1-(4-fluorophenyl)butoxy)-2-hydroxy-3-((4-methylbenzoyl)oxy)-4-oxobutanoic Acid

  • Catalogue No.:PA 05 0431016

  • CAS :

    2173043-06-4

  • Molecular Formula : C32H33FN2O8

  • Molecular Weight : 592.62

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431017

Nitroso Cyanodiol

Nitroso Cyanodiol

  • Catalogue No.:PA 05 0431017

  • CAS :

    NA

  • Molecular Formula : C19H20FN3O3

  • Molecular Weight : 357.39

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Drug Reference Standards & Impurity Synthesis in India
PA 05 0431018

N-(3-(5-Cyano-1-phenyl-1,3-dihydroisobenzofuran-1-yl)propyl)-N-methylnitrous amide

N-(3-(5-Cyano-1-phenyl-1,3-dihydroisobenzofuran-1-yl)propyl)-N-methylnitrous amide

  • Catalogue No.:PA 05 0431018

  • CAS :

    NA

  • Molecular Formula : C19H19N3O2

  • Molecular Weight : 321.38

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Drug Reference Standards & Impurity Synthesis in India
PA STI 090109

N-Nitroso-Desmethyl Escitalopram-d3

N-Nitroso-Desmethyl Escitalopram-d3

  • Catalogue No.:PA STI 090109

  • CAS :

    NA

  • Molecular Formula : C19H15D3FN3O2

  • Molecular Weight : 342.39

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