Finasteride

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Finasteride 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 : Finasteride EP Impurity C ;Finasteride USP RC B ; Finasteride 5,6-Dehydro Impurity ; Finasteride delta-1,5-Aza Amide ; 5,6-Dehydro Finasteride ; N-(1,1-Dimethylethyl)-3-oxo-4-azaandrosta-1,5-diene-17-carboxamide | 1329611-51-9

    Code: JCFSD-09
    CAS: 1329611-51-9
    Chemical Formula: C23H34N2O2
    Molecular Weight: 370.53
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Finasteride EP Impurity C ;Finasteride USP RC B ; Finasteride 5,6-Dehydro Impurity ; Finasteride delta-1,5-Aza Amide ; 5,6-Dehydro Finasteride ; N-(1,1-Dimethylethyl)-3-oxo-4-azaandrosta-1,5-diene-17-carboxamide | 1329611-51-9 is useful as reference Impurity standard.
    Finasteride EP Impurity C ;Finasteride USP RC B ; Finasteride 5,6-Dehydro Impurity ; Finasteride delta-1,5-Aza Amide ; 5,6-Dehydro Finasteride ; N-(1,1-Dimethylethyl)-3-oxo-4-azaandrosta-1,5-diene-17-carboxamide | 1329611-51-9
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    Product Name : Finasteride EP Impurity B ;Finasteride USP RC D ; Finasteride Methyl Ester Analog ; Dutasteride Methyl Ester Analog ; 3-Oxo-4-aza-5α-αndrost-1-ene-17β-carboxylic acid methyl ester | 103335-41-7

    Code: JCFSD-08
    CAS: 103335-41-7
    Chemical Formula: C20H29NO3
    Molecular Weight:  331.45
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Finasteride EP Impurity B ;Finasteride USP RC D ; Finasteride Methyl Ester Analog ; Dutasteride Methyl Ester Analog ; 3-Oxo-4-aza-5α-αndrost-1-ene-17β-carboxylic acid methyl ester | 103335-41-7 is useful as reference Impurity standard.
    Finasteride EP Impurity B ;Finasteride USP RC D ; Finasteride Methyl Ester Analog ; Dutasteride Methyl Ester Analog ; 3-Oxo-4-aza-5α-αndrost-1-ene-17β-carboxylic acid methyl ester | 103335-41-7
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    Product Name : Finasteride EP Impurity A ;Finasteride USP RC A ; Finasteride Dihydro Impurity ; 1,2-Dihydro Finasteride Impurity ; (5α,17β)-N-(1,1-Dimethylethyl)-3-oxo-4-aza-androstane-17-carboxamide ; 1,2-Dihydro Finasteride | 98319-24-5

    Code: JCFSD-07
    CAS: 98319-24-5
    Chemical Formula: C23H38N202
    Molecular Weight: 374.56
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Finasteride EP Impurity A ;Finasteride USP RC A ; Finasteride Dihydro Impurity ; 1,2-Dihydro Finasteride Impurity ; (5α,17β)-N-(1,1-Dimethylethyl)-3-oxo-4-aza-androstane-17-carboxamide ; 1,2-Dihydro Finasteride | 98319-24-5 is useful as reference Impurity standard.
    Finasteride EP Impurity A ;Finasteride USP RC A ; Finasteride Dihydro Impurity ; 1,2-Dihydro Finasteride Impurity ; (5α,17β)-N-(1,1-Dimethylethyl)-3-oxo-4-aza-androstane-17-carboxamide ; 1,2-Dihydro Finasteride | 98319-24-5
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    Product Name : Finasteride Dihydro Carboxylic Acid Methyl Ester ; 1,2-Dihydro Finasteride Carboxylic Acid Methyl Ester ; (5α,17β)-3-Oxo-4-aza-androstane-17-carboxylic acid methyl ester

    Code: JCFSD-06
    CAS: NA
    Chemical Formula: C20H31NO3
    Molecular Weight: 333.47
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Finasteride Dihydro Carboxylic Acid Methyl Ester ; 1,2-Dihydro Finasteride Carboxylic Acid Methyl Ester ; (5α,17β)-3-Oxo-4-aza-androstane-17-carboxylic acid methyl ester is useful as reference Impurity standard.
    Finasteride Dihydro Carboxylic Acid Methyl Ester ; 1,2-Dihydro Finasteride Carboxylic Acid Methyl Ester ; (5α,17β)-3-Oxo-4-aza-androstane-17-carboxylic acid methyl ester
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    Product Name : Finasteride Dihydro Carboxylic Acid ;1,2-Dihydro Finasteride Carboxylic Acid ; (5α,17β)-3-Oxo-4-aza-androstane-17-carboxylic acid | 103335-55-3

    Code: JCFSD-05
    CAS: 103335-55-3
    Chemical Formula: C19H29NO3
    Molecular Weight: 319.44
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Finasteride Dihydro Carboxylic Acid ;1,2-Dihydro Finasteride Carboxylic Acid ; (5α,17β)-3-Oxo-4-aza-androstane-17-carboxylic acid | 103335-55-3 is useful as reference Impurity standard.
    Finasteride Dihydro Carboxylic Acid ;1,2-Dihydro Finasteride Carboxylic Acid ; (5α,17β)-3-Oxo-4-aza-androstane-17-carboxylic acid | 103335-55-3
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    Product Name : Finasteride Dehydro Carboxylic Acid Methyl Ester ;Finasteride 5,6-Dehydro Carboxylic Acid Methyl Ester ; 3-Oxo-4-aza-5α-αndrost-1,5-diene-17β-carboxylic acid methyl ester | 166896-62-4

    Code: JCFSD-04
    CAS: 166896-62-4
    Chemical Formula: C20H27NO3
    Molecular Weight: 329.43
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Finasteride Dehydro Carboxylic Acid Methyl Ester ;Finasteride 5,6-Dehydro Carboxylic Acid Methyl Ester ; 3-Oxo-4-aza-5α-αndrost-1,5-diene-17β-carboxylic acid methyl ester | 166896-62-4 is useful as reference Impurity standard.
    Finasteride Dehydro Carboxylic Acid Methyl Ester ;Finasteride 5,6-Dehydro Carboxylic Acid Methyl Ester ; 3-Oxo-4-aza-5α-αndrost-1,5-diene-17β-carboxylic acid methyl ester | 166896-62-4
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    Product Name : Finasteride Dehydro Carboxylic Acid ;Finasteride 5,6-Dehydro Carboxylic Acid ; 3-Oxo-4-aza-5α-αndrost-1,5-diene-17β-carboxylic acid | 1180488-92-9

    Code: JCFSD-03
    CAS: 1180488-92-9
    Chemical Formula: C19H25NO3
    Molecular Weight: 315.41
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Finasteride Dehydro Carboxylic Acid ;Finasteride 5,6-Dehydro Carboxylic Acid ; 3-Oxo-4-aza-5α-αndrost-1,5-diene-17β-carboxylic acid | 1180488-92-9 is useful as reference Impurity standard.
    Finasteride Dehydro Carboxylic Acid ;Finasteride 5,6-Dehydro Carboxylic Acid ; 3-Oxo-4-aza-5α-αndrost-1,5-diene-17β-carboxylic acid  | 1180488-92-9
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    Product Name : Finasteride Carboxylic Acid /104239-97-6

    Code: JCFSD-02
    CAS: 104239-97-6
    Chemical Formula: C19H27NO3
    Molecular Weight: 317.42
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Finasteride Carboxylic Acid/ 104239-97-6 is useful as reference Impurity standard.
    Finasteride Carboxylic Acid /104239-97-6
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    Product Name : Finasteride ; (5a,17b)-N-(1,1-Dimethylethyl)-3-oxo-4-aza-androst-1-ene-17-carboxamide | 98319-26-7

    Code: JCFSD-01
    CAS: 98319-26-7
    Chemical Formula: C23H36N2O2
    Molecular Weight: 372.54
    Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
    Literature:
    Application: Finasteride ; (5a,17b)-N-(1,1-Dimethylethyl)-3-oxo-4-aza-androst-1-ene-17-carboxamide | 98319-26-7 is useful as reference Impurity standard.
    Finasteride ; (5a,17b)-N-(1,1-Dimethylethyl)-3-oxo-4-aza-androst-1-ene-17-carboxamide | 98319-26-7