finasteride and its Impurities

A 4-azasteroid analogue of testosterone, Finasteride is used for the treatment of enlarged prostrate and pattern hair loss (alopaecia). It is a inhibitor of 5α-reductase enzyme which coverts testosterone to ditestosterone. Finasteride is lipophillic in nature.. Reference standards of Finasteride API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below

Displaying 41 results for finasteride Impurities
Drug Reference Standards & Impurity Synthesis in India
PA 06 18000

Finasteride

Finasteride

  • Catalogue No.:PA 06 18000

  • CAS :

    98319-26-7

  • Molecular Formula : C23H36N2O2

  • Molecular Weight : 372.54

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18010

Finasteride - Impurity A

Dihydro Finasteride

  • Catalogue No.:PA 06 18010

  • CAS :

    98319-24-5

  • Molecular Formula : C23H38N2O2

  • Molecular Weight : 374.56

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18020

Finasteride - Impurity B

3-Oxo-4-aza-5α-αndrost-1-ene-17β-carboxylic Acid Methyl Ester

  • Catalogue No.:PA 06 18020

  • CAS :

    103335-41-7

  • Molecular Formula : C20H29NO3

  • Molecular Weight : 331.45

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18030

Finasteride - Impurity C

Δ-1,5-Aza amide

  • Catalogue No.:PA 06 18030

  • CAS :

    1800205-94-0

  • Molecular Formula : C23H34N2O2

  • Molecular Weight : 370.53

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18510

5,6,7,8,9-Dehydro-10-desmethyl Finasteride

5,6,7,8,9-Dehydro-10-desmethyl Finasteride

  • Catalogue No.:PA 06 18510

  • CAS :

    1346602-40-1

  • Molecular Formula : C22H28N2O2

  • Molecular Weight : 352.47

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18520

Des[[N-(1,1-Dimethylethyl)amino]carbonyl] 17-(Propionyl) Finasteride

Des[[N-(1,1-Dimethylethyl)amino]carbonyl] 17-(Propionyl) Finasteride

  • Catalogue No.:PA 06 18520

  • CAS :

    1346604-11-2

  • Molecular Formula : C21H31NO2

  • Molecular Weight : 329.48

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18530

Dutasteride

Dutasteride

  • Catalogue No.:PA 06 18530

  • CAS :

    164656-23-9

  • Molecular Formula : C27H30F6N2O2

  • Molecular Weight : 528.53

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18540

Finasteride Carboxaldehyde

Finasteride Carboxaldehyde

  • Catalogue No.:PA 06 18540

  • CAS :

    154387-61-8

  • Molecular Formula : C23H34N2O3

  • Molecular Weight : 386.53

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18550

Finasteride Carboxylic Acid Acyl-β-D-glucuronide

Finasteride Carboxylic Acid Acyl-β-D-glucuronide

  • Catalogue No.:PA 06 18550

  • CAS :

    1196787-40-2

  • Molecular Formula : C29H42N2O10

  • Molecular Weight : 578.65

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18560

Finasteride Carboxylic Acid

Finasteride Carboxylic Acid

  • Catalogue No.:PA 06 18560

  • CAS :

    116285-37-1

  • Molecular Formula : C23H34N2O4

  • Molecular Weight : 402.53

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18570

Finasteride 2-(2-Methylpropanol)amide

Finasteride 2-(2-Methylpropanol)amide

  • Catalogue No.:PA 06 18570

  • CAS :

    116285-36-0

  • Molecular Formula : C23H36N2O3

  • Molecular Weight : 388.54

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18580

Finasteride 2-(2-Methylpropanol)amide β-D-Glucuronide

Finasteride 2-(2-Methylpropanol)amide β-D-Glucuronide

  • Catalogue No.:PA 06 18580

  • CAS :

    NA

  • Molecular Formula : C28H42N2O9

  • Molecular Weight : 550.64

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18590

5β-Finasteride

5β-Finasteride

  • Catalogue No.:PA 06 18590

  • CAS :

    140375-22-0

  • Molecular Formula : C23H36N2O2

  • Molecular Weight : 372.54

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18600

6α-Hydroxy Finasteride

6α-Hydroxy Finasteride

  • Catalogue No.:PA 06 18600

  • CAS :

    154387-62-9

  • Molecular Formula : C23H36N2O3

  • Molecular Weight : 388.54

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18610

3-Oxo-4-aza-5a-androst-1,5-diene-17β-carboxylic Acid Methyl Ester

3-Oxo-4-aza-5a-androst-1,5-diene-17β-carboxylic Acid Methyl Ester

  • Catalogue No.:PA 06 18610

  • CAS :

    166896-62-4

  • Molecular Formula : C20H27NO3

  • Molecular Weight : 329.43

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18620

N-Des(1,1-dimethylethyl) N-Cyclohexyl Finasteride

N-Des(1,1-dimethylethyl) N-Cyclohexyl Finasteride

  • Catalogue No.:PA 06 18620

  • CAS :

    133216-45-2

  • Molecular Formula : C25H38N2O2

  • Molecular Weight : 398.58

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18630

(3bR,3cS,5aS,6R,8aS,8bS)-N-(tert-Butyl)-3b,5a-dimethyl-2-oxohexadecahydro-1H-indeno[5,4-f]oxireno[2,3-c]quinoline-6-carboxamide

(3bR,3cS,5aS,6R,8aS,8bS)-N-(tert-Butyl)-3b,5a-dimethyl-2-oxohexadecahydro-1H-indeno[5,4-f]oxireno[2,3-c]quinoline-6-carboxamide

  • Catalogue No.:PA 06 18630

  • CAS :

    NA

  • Molecular Formula : C23H36N2O3

  • Molecular Weight : 388.55

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18640

(4aR,4bS,6aS,7R,9aS,9bR,11aR)-N-(tert-Butyl)-7-hydroxy-4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

(4aR,4bS,6aS,7R,9aS,9bR,11aR)-N-(tert-Butyl)-7-hydroxy-4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

  • Catalogue No.:PA 06 18640

  • CAS :

    NA

  • Molecular Formula : C23H36N2O3

  • Molecular Weight : 388.55

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Drug Reference Standards & Impurity Synthesis in India
PA 06 18650

(4aR,4bS,6aS,7R,9aS,9bR)-N-(tert-Butyl)-7-hydroxy-4a,6a-dimethyl-2-oxo-2,3,4,4a,4b,5,6,6a,7,8,9,9a,9b,10-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

(4aR,4bS,6aS,7R,9aS,9bR)-N-(tert-Butyl)-7-hydroxy-4a,6a-dimethyl-2-oxo-2,3,4,4a,4b,5,6,6a,7,8,9,9a,9b,10-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

  • Catalogue No.:PA 06 18650

  • CAS :

    206351-39-5

  • Molecular Formula : C23H36N2O3

  • Molecular Weight : 388.55

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Drug Reference Standards & Impurity Synthesis in India
PA STI 041190

Finasteride-d9

Finasteride-d9

  • Catalogue No.:PA STI 041190

  • CAS :

    1131342-85-2

  • Molecular Formula : C23H27D9N2O2

  • Molecular Weight : 381.61

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Drug Reference Standards & Impurity Synthesis in India
PA IPIPRS 29 12

Finasteride (IPRS/29/12)-from IPC

Finasteride (IPRS/29/12)-from IPC

  • Catalogue No.:PA IPIPRS 29 12

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPY0000090

Finasteride (Y0000090)

Finasteride (Y0000090)

  • Catalogue No.:PA EPY0000090

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPY0001604

Finasteride for peak identification (Y0001604)

Finasteride for peak identification (Y0001604)

  • Catalogue No.:PA EPY0001604

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1270402

Finasteride (1270402)

Finasteride (1270402)

  • Catalogue No.:PA USP1270402

  • CAS :

    98319-26-7

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA BP740RB

finasteride (740RB)

finasteride (740RB)

  • Catalogue No.:PA BP740RB

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PAI 06 015020

(4aR,4bS,6aS,7S,9aS,9bS)-N-(1,1-Dimethylethyl)-2,3,4,4a,4b,5,6,6a,7,8,9,9a,9b,10-tetradecahydro-4a,6a-dimethyl-2-oxo-1H-indeno[5,4-f]quinoline-7-carboxamide

(4aR,4bS,6aS,7S,9aS,9bS)-N-(1,1-Dimethylethyl)-2,3,4,4a,4b,5,6,6a,7,8,9,9a,9b,10-tetradecahydro-4a,6a-dimethyl-2-oxo-1H-indeno[5,4-f]quinoline-7-carboxamide

  • Catalogue No.:PAI 06 015020

  • CAS :

    166896-74-8

  • Molecular Formula : C23H36N2O2

  • Molecular Weight : 372.55

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Drug Reference Standards & Impurity Synthesis in India
PAI 06 015021

1-Chloro Finasteride

1-Chloro Finasteride

  • Catalogue No.:PAI 06 015021

  • CAS :

    NA

  • Molecular Formula : C23H35ClN2O2

  • Molecular Weight : 407

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0181000

3-Oxo-4-aza-11a-methoxy-5α-αndrost-1-ene-17β-carboxylic acid methyl ester

3-Oxo-4-aza-11a-methoxy-5α-αndrost-1-ene-17β-carboxylic acid methyl ester

  • Catalogue No.:PA 06 0181000

  • CAS :

    1026013-15-9

  • Molecular Formula : C21H31NO4

  • Molecular Weight : 361.48

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0181001

Methyl (4aR,6aS,7S)-4a,6a-dimethyl-2-oxohexadecahydro-1H-indeno[5,4-f]quinoline-7-carboxylate

Methyl (4aR,6aS,7S)-4a,6a-dimethyl-2-oxohexadecahydro-1H-indeno[5,4-f]quinoline-7-carboxylate

  • Catalogue No.:PA 06 0181001

  • CAS :

    104214-18-8

  • Molecular Formula : C20H31NO3

  • Molecular Weight : 333.47

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0181002

3-((3S,3aS,5aS,6R,9aS,9bS)-3-(methoxycarbonyl)-3a,6-dimethyl-7-oxododecahydro-1H-cyclopenta[a]naphthalen-6-yl)propanoic acid

3-((3S,3aS,5aS,6R,9aS,9bS)-3-(methoxycarbonyl)-3a,6-dimethyl-7-oxododecahydro-1H-cyclopenta[a]naphthalen-6-yl)propanoic acid

  • Catalogue No.:PA 06 0181002

  • CAS :

    92472-33-8

  • Molecular Formula : C20H30O5

  • Molecular Weight : 350.46

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Drug Reference Standards & Impurity Synthesis in India
PA IMP 03 19

Finasteride Impurity A (IMP/03/19)

Finasteride Impurity A (IMP/03/19)

  • Catalogue No.:PA IMP 03 19

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0181003

(4aR,4bS,6aS,7R,9aS,9bS,11aR)-N-(tert-Butyl)-4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

(4aR,4bS,6aS,7R,9aS,9bS,11aR)-N-(tert-Butyl)-4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

  • Catalogue No.:PA 06 0181003

  • CAS :

    140375-21-9

  • Molecular Formula : C23H36N2O2

  • Molecular Weight : 372.55

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0181004

(4aR,4bS,6aS,7R,9aS,9bS,11aS)-N-(tert-Butyl)-4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

(4aR,4bS,6aS,7R,9aS,9bS,11aS)-N-(tert-Butyl)-4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

  • Catalogue No.:PA 06 0181004

  • CAS :

    NA

  • Molecular Formula : C23H36N2O2

  • Molecular Weight : 372.55

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0181005

5β-Dihydro Finasteride

5β-Dihydro Finasteride

  • Catalogue No.:PA 06 0181005

  • CAS :

    172922-52-0

  • Molecular Formula : C23H38N2O2

  • Molecular Weight : 374.57

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Drug Reference Standards & Impurity Synthesis in India
PAI 06 015022

(17β)-N-(1,1-Dimethylethyl)-3-oxoandrost-4-ene-17-carboxamide

(17β)-N-(1,1-Dimethylethyl)-3-oxoandrost-4-ene-17-carboxamide

  • Catalogue No.:PAI 06 015022

  • CAS :

    131267-80-6

  • Molecular Formula : C24H37NO2

  • Molecular Weight : 371.57

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Drug Reference Standards & Impurity Synthesis in India
PAI 06 015023

3-((3aS,5aS,6R,9aS,9bS)-3-(Tert-Butylcarbamoyl)-3a,6-dimethyl-7-oxododecahydro-1H-cyclopenta[a]naphthalen-6-yl)propanoic Acid

3-((3aS,5aS,6R,9aS,9bS)-3-(Tert-Butylcarbamoyl)-3a,6-dimethyl-7-oxododecahydro-1H-cyclopenta[a]naphthalen-6-yl)propanoic Acid

  • Catalogue No.:PAI 06 015023

  • CAS :

    NA

  • Molecular Formula : C23H37NO4

  • Molecular Weight : 391.55

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Drug Reference Standards & Impurity Synthesis in India
PAI 06 015024

(8S,9S,10R,13S,14S,17S)-10,13-Dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carbonyl Chloride

(8S,9S,10R,13S,14S,17S)-10,13-Dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carbonyl Chloride

  • Catalogue No.:PAI 06 015024

  • CAS :

    57072-90-9

  • Molecular Formula : C20H27ClO2

  • Molecular Weight : 334.88

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0181006

rel-(4aR,4bS,6aS,7S,9aS,9bS)-N-(tert-Butyl)-4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10-dodecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

rel-(4aR,4bS,6aS,7S,9aS,9bS)-N-(tert-Butyl)-4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10-dodecahydro-1H-indeno[5,4-f]quinoline-7-carboxamide

  • Catalogue No.:PA 06 0181006

  • CAS :

    1329611-51-9

  • Molecular Formula : C23H34N2O2

  • Molecular Weight : 370.54

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0181007

Finasteride Dihydro Carboxylic Acid Methyl Ester

Finasteride Dihydro Carboxylic Acid Methyl Ester

  • Catalogue No.:PA 06 0181007

  • CAS :

    73671-92-8

  • Molecular Formula : C20H31NO3

  • Molecular Weight : 333.47

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Drug Reference Standards & Impurity Synthesis in India
PA IPRSF041

Finasteride (IPRSF041)

Finasteride (IPRSF041)

  • Catalogue No.:PA IPRSF041

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA WSM 0180600032

Finasteride (WSM)

Finasteride (WSM)

  • Catalogue No.:PA WSM 0180600032

  • CAS :

    98319-26-7 (WSM)

  • Molecular Formula : C23H36N2O2

  • Molecular Weight : 372.55

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