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. 
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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. 
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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. 
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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. 
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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. 
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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. 
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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. 
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Product Name : Finasteride Carboxylic Acid ; (5a,17b)-3-Oxo-4-aza-androst-1-ene-17-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 ; (5a,17b)-3-Oxo-4-aza-androst-1-ene-17-carboxylic acid | 104239-97-6 is useful as reference Impurity standard. 
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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. 
