Donepezil

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Donepezil  API Reference standards  and its EP Impurities, USP Impurities, non pharmacopeial Impurities, listed below & also offered custom synthesis for unknown Impurities. If require any contact info@drjcrbio.com, sales@drjcrbio.com

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    Product Name : Donepezil Pyridine N-Oxide ; 5,6-Dimethoxy-2-(1-oxido-pyridin-4-ylmethyl)indan-1-one | 896134-07-9 

    Code: JCDNP-20
    CAS: 896134-07-9
    Chemical Formula: C17H17NO4
    Molecular Weight: 299.32
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Pyridine N-Oxide ; 5,6-Dimethoxy-2-(1-oxido-pyridin-4-ylmethyl)indan-1-one | 896134-07-9 is useful as reference Impurity standard.
    Donepezil Pyridine N-Oxide ; 5,6-Dimethoxy-2-(1-oxido-pyridin-4-ylmethyl)indan-1-one | 896134-07-9 
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    Product Name : Donepezil Pyridine Dehydro N-Oxide ; 5,6-Dimethoxy-2-(1-oxido-pyridin-4-ylmethylene)indan-1-one | 896134-06-8 

    Code: JCDNP-19
    CAS: 896134-06-8
    Chemical Formula: C17H15NO4
    Molecular Weight: 297.31
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Pyridine Dehydro N-Oxide ; 5,6-Dimethoxy-2-(1-oxido-pyridin-4-ylmethylene)indan-1-one | 896134-06-8 is useful as reference Impurity standard.
    Donepezil Pyridine Dehydro N-Oxide ; 5,6-Dimethoxy-2-(1-oxido-pyridin-4-ylmethylene)indan-1-one | 896134-06-8 
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    Product Name : Donepezil Open-Ring Hydroxy Acid ; Donepezil Hydroxy Acid Impurity ; 2-[3-(1-Benzylpiperidin-4-yl)-2-hydroxypropyl)-4,5-dimethoxybenzoic acid

    Code: JCDNP-18
    CAS: NA
    Chemical Formula: C24H31NO5
    Molecular Weight: 413.51
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Open-Ring Hydroxy Acid ; Donepezil Hydroxy Acid Impurity ; 2-[3-(1-Benzylpiperidin-4-yl)-2-hydroxypropyl)-4,5-dimethoxybenzoic acid is useful as reference Impurity standard.
    Donepezil Open-Ring Hydroxy Acid ; Donepezil Hydroxy Acid Impurity ; 2-[3-(1-Benzylpiperidin-4-yl)-2-hydroxypropyl)-4,5-dimethoxybenzoic acid
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    Product Name : Donepezil N-Oxide ;  (RS)-2-[(1-Benzyl-4-piperidyl)methyl]-5,6-dimethoxy-1-indanone N-Oxide |  120013-84-5 

    Code: JCDNP-17
    CAS: 120013-84-5
    Chemical Formula: C24H29NO4
    Molecular Weight: 395.49
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application:Donepezil N-Oxide ;  (RS)-2-[(1-Benzyl-4-piperidyl)methyl]-5,6-dimethoxy-1-indanone N-Oxide |  120013-84-5 is useful as reference Impurity standard.
    Donepezil N-Oxide ;  (RS)-2-[(1-Benzyl-4-piperidyl)methyl]-5,6-dimethoxy-1-indanone N-Oxide |  120013-84-5 
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    Product Name : Donepezil Desbenzyl Deoxy Impurity ; 4-[(5,6-Dimethoxyindan-2-yl)methyl] piperidine HCl |  1034439-43-4 

    Code: JCDNP-16
    CAS: 1034439-43-4
    Chemical Formula: C17H26ClNO2
    Molecular Weight: 311.85
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Desbenzyl Deoxy Impurity ; 4-[(5,6-Dimethoxyindan-2-yl)methyl] piperidine HCl |  1034439-43-4 is useful as reference Impurity standard.
    Donepezil Desbenzyl Deoxy Impurity ; 4-[(5,6-Dimethoxyindan-2-yl)methyl] piperidine HCl |  1034439-43-4 
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    Product Name : Donepezil 6-O-Desmethyl Impurity ; (RS)-2-[(1-Benzyl-4-piperidyl)methyl]-6-hydroxy-5-methoxy-1-indanone |  120013-56-1 

    Code: JCDNP-15
    CAS: 120013-57-2
    Chemical Formula: C23H27NO3
    Molecular Weight: 365.47
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil 6-O-Desmethyl Impurity ; (RS)-2-[(1-Benzyl-4-piperidyl)methyl]-6-hydroxy-5-methoxy-1-indanone |  120013-56-1 is useful as reference Impurity standard.
    Donepezil 6-O-Desmethyl Impurity ; (RS)-2-[(1-Benzyl-4-piperidyl)methyl]-6-hydroxy-5-methoxy-1-indanone |  120013-56-1 
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    Product Name : Donepezil 5-O-Desmethyl Impurity ; (RS)-2-[(1-Benzyl-4-piperidyl)methyl]-5-hydroxy-6-methoxy-1-indanone | 120013-57-2 

    Code: JCDNP-14
    CAS: 120013-57-2
    Chemical Formula: C23H27NO3
    Molecular Weight: 365.47
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil 5-O-Desmethyl Impurity ; (RS)-2-[(1-Benzyl-4-piperidyl)methyl]-5-hydroxy-6-methoxy-1-indanone | 120013-57-2  is useful as reference Impurity standard.
    Donepezil 5-O-Desmethyl Impurity ; (RS)-2-[(1-Benzyl-4-piperidyl)methyl]-5-hydroxy-6-methoxy-1-indanone | 120013-57-2 
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    Product Name : Donepezil USP RC A ;Donepezil USP Related Compound A ; Donepezil Dehydro Impurity ; (E)-Dehydro Donepezil ; (E)-2-[(1-Benzylpiperidin-4-yl)methylene]-5,6-dimethoxyindan-1-one | 145546-80-1

    Code: JCDNP-13
    CAS: 145546-80-1
    Chemical Formula: C24H27NO3
    Molecular Weight: 377.48
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil USP RC A ;Donepezil USP Related Compound A ; Donepezil Dehydro Impurity ; (E)-Dehydro Donepezil ; (E)-2-[(1-Benzylpiperidin-4-yl)methylene]-5,6-dimethoxyindan-1-one | 145546-80-1 is useful as reference Impurity standard.
    Donepezil USP RC A ;Donepezil USP Related Compound A ; Donepezil Dehydro Impurity ; (E)-Dehydro Donepezil ; (E)-2-[(1-Benzylpiperidin-4-yl)methylene]-5,6-dimethoxyindan-1-one | 145546-80-1
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    Product Name : Donepezil Pyridine Impurity ; 5,6-Dimethoxy-2-(pyridin-4-ylmethyl)indan-1-one | 4803-57-0

    Code: JCDNP-12
    CAS: 4803-57-0
    Chemical Formula: C17H17NO3
    Molecular Weight: 283.32
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Pyridine Impurity ; 5,6-Dimethoxy-2-(pyridin-4-ylmethyl)indan-1-one | 4803-57-0 is useful as reference Impurity standard.
    Donepezil Pyridine Impurity ; 5,6-Dimethoxy-2-(pyridin-4-ylmethyl)indan-1-one | 4803-57-0
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    Product Name : Donepezil Pyridine Dehydro Impurity ; 5,6-Dimethoxy-2-(pyridin-4-ylmethylene)indan-1-one | 4803-74-1

    Code: JCDNP-11
    CAS: 4803-74-1
    Chemical Formula: C17H15NO3
    Molecular Weight: 281.31
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Pyridine Dehydro Impurity ; 5,6-Dimethoxy-2-(pyridin-4-ylmethylene)indan-1-one | 4803-74-1 is useful as reference Impurity standard.
    Donepezil Pyridine Dehydro Impurity ; 5,6-Dimethoxy-2-(pyridin-4-ylmethylene)indan-1-one | 4803-74-1
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    Product Name : Donepezil Open-Ring Keto Acid ; Donepezil Keto Acid Impurity ; 2-[3-(1-Benzylpiperidin-4-yl)-2-oxopropyl)-4,5-dimethoxybenzoic acid | 197010-25-6

    Code: JCDNP-10
    CAS: 197010-25-6
    Chemical Formula: C24H29NO5
    Molecular Weight: 411.49
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Open-Ring Keto Acid ; Donepezil Keto Acid Impurity ; 2-[3-(1-Benzylpiperidin-4-yl)-2-oxopropyl)-4,5-dimethoxybenzoic acid | 197010-25-6 is useful as reference Impurity standard.
    Donepezil Open-Ring Keto Acid ;  Donepezil Keto Acid Impurity ; 2-[3-(1-Benzylpiperidin-4-yl)-2-oxopropyl)-4,5-dimethoxybenzoic acid | 197010-25-6
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    Product Name : Donepezil Hydroxy Keto Impurity ; 2-[(1-Benzylpiperidin-4-yl)(hydroxy)methyl]-5,6-dimethoxyindan-1-one | 197010-20-1

    Code: JCDNP-09
    CAS: 197010-20-1
    Chemical Formula: C24H29NO4
    Molecular Weight: 395.49
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Hydroxy Keto Impurity ; 2-[(1-Benzylpiperidin-4-yl)(hydroxy)methyl]-5,6-dimethoxyindan-1-one | 197010-20-1 is useful as reference Impurity standard.
    Donepezil Hydroxy Keto Impurity ;  2-[(1-Benzylpiperidin-4-yl)(hydroxy)methyl]-5,6-dimethoxyindan-1-one | 197010-20-1
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    Product Name : Donepezil Hydroxy Impurity ; 2-[(1-Benzylpiperidin-4-yl)hydroxymethyl]-5,6-dimethoxyindan-1-one | 197010-20-1

    Code: JCDNP-08
    CAS: 197010-20-1
    Chemical Formula:  C24H29NO4
    Molecular Weight: 395.49
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Hydroxy Impurity ; 2-[(1-Benzylpiperidin-4-yl)hydroxymethyl]-5,6-dimethoxyindan-1-one | 197010-20-1 is useful as reference Impurity standard.
    Donepezil Hydroxy Impurity ;  2-[(1-Benzylpiperidin-4-yl)hydroxymethyl]-5,6-dimethoxyindan-1-one | 197010-20-1
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    Product Name : Donepezil Hydrochloride ; (±)-2-[(1-Benzyl-4-piperidyl)methyl]-5,6-dimethoxy-1-indanone hydrochloride | 120011-70-3

    Code: JCDNP-07
    CAS: 120011-70-3
    Chemical Formula: C24H30ClNO3
    Molecular Weight: 415.95
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Hydrochloride ; (±)-2-[(1-Benzyl-4-piperidyl)methyl]-5,6-dimethoxy-1-indanone hydrochloride | 120011-70-3  is useful as reference Impurity standard.
    Donepezil Hydrochloride ; (±)-2-[(1-Benzyl-4-piperidyl)methyl]-5,6-dimethoxy-1-indanone hydrochloride | 120011-70-3
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    Product Name : Donepezil Dihydro Impurity ; 2,3-Dihydro-5,6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1H-inden-1-ol | 120012-04-6

    Code: JCDNP-06
    CAS: 120012-04-6
    Chemical Formula: C24H31NO3
    Molecular Weight: 381.51
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Dihydro Impurity ; 2,3-Dihydro-5,6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1H-inden-1-ol | 120012-04-6 is useful as reference Impurity standard.
    Donepezil Dihydro Impurity ; 2,3-Dihydro-5,6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1H-inden-1-ol | 120012-04-6
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    Product Name : Donepezil Desbenzyl Impurity ;Desbenzyl Donepezil Hydrochloride (USP) ; 5,6-Dimethoxy-2-(piperidin-4-ylmethyl) indan-1-one hydrochloride | 120013-39-0

    Code: JCDNP-05
    CAS: 120013-39-0
    Chemical Formula: C17H24ClNO3
    Molecular Weight: 325.83
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Desbenzyl Impurity ;Desbenzyl Donepezil Hydrochloride (USP) ; 5,6-Dimethoxy-2-(piperidin-4-ylmethyl) indan-1-one hydrochloride | 120013-39-0 is useful as reference Impurity standard.
    Donepezil Desbenzyl Impurity ;Desbenzyl Donepezil Hydrochloride (USP) ; 5,6-Dimethoxy-2-(piperidin-4-ylmethyl) indan-1-one hydrochloride |  120013-39-0
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    Product Name : Donepezil Deoxy Impurity ; 1-Benzyl-4-[(5,6-dimethoxyindan-2-yl)methyl] piperidine hydrochloride | 1034439-57-0

    Code: JCDNP-04
    CAS: 1034439-57-0
    Chemical Formula: C24H31NO2
    Molecular Weight: 365.51
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Deoxy Impurity ; 1-Benzyl-4-[(5,6-dimethoxyindan-2-yl)methyl] piperidine hydrochloride | 1034439-57-0 is useful as reference Impurity standard.
    Donepezil Deoxy Impurity ; 1-Benzyl-4-[(5,6-dimethoxyindan-2-yl)methyl] piperidine hydrochloride | 1034439-57-0
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    Product Name : Donepezil Dehydro Deoxy Impurity ;Donepezil Indene Impurity ; 1-Benzyl-4-[(5,6-dimethoxyinden-2-yl)methyl] piperidine | 120013-45-8

    Code: JCDNP-03
    CAS: 120013-45-8
    Chemical Formula: C24H29NO2
    Molecular Weight: 363.49
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Dehydro Deoxy Impurity ;Donepezil Indene Impurity ; 1-Benzyl-4-[(5,6-dimethoxyinden-2-yl)methyl] piperidine | 120013-45-8 is useful as reference Impurity standard.
    Donepezil Dehydro Deoxy Impurity ;Donepezil Indene Impurity ; 1-Benzyl-4-[(5,6-dimethoxyinden-2-yl)methyl] piperidine | 120013-45-8
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    Product Name : : Donepezil Benzyl Bromide ; 1,1-Dibenzyl-4-[(5,6-dimethoxy-1-oxoindan-2-yl) methyl]piperidinium bromide | 844694-85-5

    Code: JCDNP-02
    CAS: 844694-85-5
    Chemical Formula: C31H36BrNO3
    Molecular Weight: 550.53
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: : Donepezil Benzyl Bromide ; 1,1-Dibenzyl-4-[(5,6-dimethoxy-1-oxoindan-2-yl) methyl]piperidinium bromide | 844694-85-5 is useful as reference Impurity standard.
    : Donepezil Benzyl Bromide ; 1,1-Dibenzyl-4-[(5,6-dimethoxy-1-oxoindan-2-yl) methyl]piperidinium bromide | 844694-85-5
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    Product Name : Donepezil Aldehyde Impurity ; (RS)-(1-Benzyl-piperidin-4-yl)formaldehyde | 22065-85-6

    Code: JCDNP-01
    CAS: 22065-85-6
    Chemical Formula: C13H17NO
    Molecular Weight: 203.28
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Donepezil Aldehyde Impurity ; (RS)-(1-Benzyl-piperidin-4-yl)formaldehyde | 22065-85-6 is useful as reference Impurity standard.
    Donepezil Aldehyde Impurity ;  (RS)-(1-Benzyl-piperidin-4-yl)formaldehyde | 22065-85-6