Allopurinol

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Allopurinol 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 : Allopurinol Impurity F ;Diazane; Diamine; |302-01-2

    Code: JCAPR-09
    CAS:302-01-2
    Chemical Formula: H4N2 
    Molecular Weight: 32.05
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Allopurinol Impurity F ;Diazane; Diamine; |302-01-2  is useful as reference Impurity standard.
    Allopurinol Impurity F ;Diazane; Diamine; |302-01-2
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    Product Name : Allopurinol USP RC F ; (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-pyrazole-4-carboxylic acid ethyl ester ;

    Code: JCAPR-08
    CAS: 321571-07-7
    Chemical Formula:C12H14N4O4 ;
    Molecular Weight: 278.26
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Allopurinol USP RC F ; (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-pyrazole-4-carboxylic acid ethyl ester ;321571-07-7 is useful as reference Impurity standard.
    Allopurinol USP RC F ; (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-pyrazole-4-carboxylic acid ethyl ester ;
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    Product Name : Allopurinol ; 1,5-Dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one | 315-30-0

    Code: JCAPR-07
    CAS:  315-30-0
    Chemical Formula: C5H4N4O
    Molecular Weight: 136.11
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Allopurinol ; 1,5-Dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one | 315-30-0 is useful as reference Impurity standard.
    Allopurinol ; 1,5-Dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one | 315-30-0
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    Product Name : Allopurinol Nitrile Impurity ; 3-Amino-3-pyrazolecarbonitrile | 16617-46-2

    Code: JCAPR-06
    CAS:  16617-46-2
    Chemical Formula: C4H4N4
    Molecular Weight: 108.10
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Allopurinol Nitrile Impurity ; 3-Amino-3-pyrazolecarbonitrile | 16617-46-2 is useful as reference Impurity standard.
    Allopurinol Nitrile Impurity ; 3-Amino-3-pyrazolecarbonitrile | 16617-46-2
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    Product Name : Allopurinol Impurity E ; Allopurinol Related Compound E ; Ethyl 5-(formylamino)-1H-pyrazole-4-carboxylate |  31055-19-3

    Code: JCAPR-05
    CAS: 31055-19-3
    Chemical Formula:  C7H9N3O3
    Molecular Weight: 183.16
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Allopurinol Impurity E ; Allopurinol Related Compound E ; Ethyl 5-(formylamino)-1H-pyrazole-4-carboxylate |  31055-19-3 is useful as reference Impurity standard.
    Allopurinol Impurity E ; Allopurinol Related Compound E ; Ethyl 5-(formylamino)-1H-pyrazole-4-carboxylate |  31055-19-3
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    Product Name : Allopurinol Impurity D ; Allopurinol Related Compound D ; Ethyl 5-amino-1H-pyrazole-4-carboxylate | 6994-25-8

    Code: JCAPR-04
    CAS: 6994-25-8
    Chemical Formula: C6H9N3O2
    Molecular Weight: 155.15
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Allopurinol Impurity D ; Allopurinol Related Compound D ; Ethyl 5-amino-1H-pyrazole-4-carboxylate | 6994-25-8 is useful as reference Impurity standard.
    Allopurinol Impurity D ; Allopurinol Related Compound D ; Ethyl 5-amino-1H-pyrazole-4-carboxylate | 6994-25-8
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    Product Name : Allopurinol Impurity C ; Allopurinol Related Compound C ; N-(4H-1,2,4-Triazol-4-yl)1H-pyrazole-4-carboxamide | 1346604-13-4

    Code: JCAPR-03
    CAS: 1346604-13-4
    Chemical Formula: C6H6N6O
    Molecular Weight: 178.15
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Allopurinol Impurity C ; Allopurinol Related Compound C ; N-(4H-1,2,4-Triazol-4-yl)1H-pyrazole-4-carboxamide | 1346604-13-4 is useful as reference Impurity standard.
    Allopurinol Impurity C ; Allopurinol Related Compound C ; N-(4H-1,2,4-Triazol-4-yl)1H-pyrazole-4-carboxamide | 1346604-13-4
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    Product Name : Allopurinol Impurity B ; Allopurinol Related Compound B ; 5-Formylamino-1H-pyrazole-4-carboxamide | 22407-20-1

    Code: JCAPR-02
    CAS: 22407-20-1
    Chemical Formula: C5H6N4O2
    Molecular Weight: 154.13
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Allopurinol Impurity B ; Allopurinol Related Compound B ; 5-Formylamino-1H-pyrazole-4-carboxamide | 22407-20-1 is useful as reference Impurity standard.
    Allopurinol Impurity B ; Allopurinol Related Compound B ; 5-Formylamino-1H-pyrazole-4-carboxamide | 22407-20-1
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    Product Name : Allopurinol Impurity A ; Allopurinol Related Compound A ; 5-Amino-1H-pyrazole-4-carboxamide | 27511-79-1

    Code: JCAPR-01
    CAS: 27511-79-1
    Chemical Formula: C4H6N4O
    Molecular Weight: 126.12
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Allopurinol Impurity A ; Allopurinol Related Compound A ; 5-Amino-1H-pyrazole-4-carboxamide | 27511-79-1 is useful as reference Impurity standard.
    Allopurinol Impurity A ; Allopurinol Related Compound A ; 5-Amino-1H-pyrazole-4-carboxamide | 27511-79-1
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