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Impurities and reference standards

Dutasteride acid

Also known as (4aR,4bS,6aS,7S,9aS,9bS,11aR)-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-carboxylic acid, 3-Oxo-4-aza-5alpha-androst-1-ene-17beta-carboxylic acid, Dutasteride impurity a

CAS 104239-97-6Formula C19H27NO3Molar mass 317.43 g/molEC 600-542-3
GHS signal word: Warning. Pictograms: Harmful or irritant, Serious health hazard 4 suppliers listed
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Dutasteride acid chemical structure, C19H27NO3, CAS 104239-97-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
104239-97-6
Formula
C19H27NO3
Molar mass
317.43 g/mol
EC number
600-542-3
HS code
293379
Category
Impurities and reference standards

What is Dutasteride acid?

Plain description, key identifiers and synonyms

Dutasteride acid is a chemical substance with the molecular formula C19H27NO3 and a molar mass of 317.43 g/mol. Its CAS registry number is 104239-97-6. The IUPAC name is (1S,3aS,3bS,5aR,9aR,9bS,11aS)-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,5,5a,6,9b,10,11-dodecahydroindeno[5,4-f]quinoline-1-carboxylic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(1S,3aS,3bS,5aR,9aR,9bS,11aS)-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,5,5a,6,9b,10,11-dodecahydroindeno[5,4-f]quinoline-1-carboxylic acid
CAS number
104239-97-6
EC numbers
600-542-3, 918-246-0
Molecular formula
C19H27NO3
UNII
2E6A626D4R
MDL number
MFCD08063794
InChIKey
FDESQZBVTKLIQN-MLGOENBGSA-N
InChI
InChI=1S/C19H27NO3/c1-18-9-7-13-11(12(18)4-5-14(18)17(22)23)3-6-15-19(13,2)10-8-16(21)20-15/h8,10-15H,3-7,9H2,1-2H3,(H,20,21)(H,22,23)/t11-,12-,13-,14+,15+,18-,19+/m0/s1
Canonical SMILES
CC12C=CC(=O)NC1CCC1C2CCC2(C)C(C(=O)O)CCC12
Isomeric SMILES
C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@H]2C(=O)O)CC[C@@H]4[C@@]3(C=CC(=O)N4)C

Synonyms

  • (4aR,4bS,6aS,7S,9aS,9bS,11aR)-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-carboxylic acid
  • 3-Oxo-4-aza-5alpha-androst-1-ene-17beta-carboxylic acid
  • Dutasteride impurity a
  • (4aR,4bS,6aS,7S,9aS,9bS,11aR)-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-4a,6a-dimethyl-2-oxo-1H-indeno[5,4-f]quinoline-7-carboxylic Acid
  • Dutasteride impurity a (ep impurity)
  • (4ar,4bs,6as,7s,9as,9bs,11ar)-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-4a,6a-dimethyl-2-oxo-1h-indeno(5,4-f)quinoline-7-carboxylic acid
  • (4aR,4bS,6aS,7S,9aS,9bS,11aR)-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-carboxylic acid
  • 4-Aza-5a-androstan-1-ene-3-one-17b-carboxylic acid
  • Dutasteride EP Impurity A
  • Finasteride Acid
  • (1S,3aS,3bS,5aR,9aR,9bS,11aS)-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,5,5a,6,9b,10,11-dodecahydroindeno[5,4-f]quinoline-1-carboxylic acid
  • (5alpha,17beta)-3-Oxo-4-azaandrost-1-ene-17-carboxylic acid
  • 1H-Indeno(5,4-f)quinoline-7-carboxylic acid, 2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-4a,6a-dimethyl-2-oxo-, (4aR,4bS,6aS,7S,9aS,9bS,11aR)-
  • 3-Oxo-4-aza-5a-androst-1-ene-17b-carboxylic Acid
  • 3-Oxo-4-aza-5|A-androst-1-ene-17|A-carboxylic acid
  • (5a,17b)-3-Oxo-4-aza-androst-1-ene-17-carboxylic acid
  • (4aR,4bS,6aS,7S,9aS,9bS,11aR)-4a,6a-dimethyl-2-oxo-1H,2H,4aH,4bH,5H,6H,6aH,7H,8H,9H,9aH,9bH,10H,11H,11aH-indeno[5,4-f]quinoline-7-carboxylic acid
  • 3-Oxo-4-aza-5?-?ndrost-1-ene-17?-carboxylic Acid
  • 3-Oxo-4-aza-5|_-androst-1-ene-17|_-carboxylic Acid
  • 4-aza-5|A-androstan-1-ene-3-one-17|A-carboxylic acid
  • 3-Oxo-4-aza-5I+/--androst-1-ene-17I(2)-carboxylic acid
  • 3-Oxo-4-aza-5f inverted question mark-androst-1-ene-17fA-carboxylic Acid
  • (1S,2R,7R,10S,11S,14S,15S)-2,15-dimethyl-5-oxo-6-azatetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadec-3-ene-14-carboxylic acid
  • (4aR,4bS,6aS,7S,9aS,9bS,11aR)-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-Tetradecahydro-4a,6a-dimethyl-2-oxo-1H-indeno[5,4-f]quinoline-7-c arboxylic Acid

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
317.43 g/molcalc.
Exact mass
317.1991 Dacalc.
LogP (octanol/water)
2.98calc.
Topological polar surface area
66.4 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
23calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.79calc.
Formal charge
0calc.
Stereocentres
7calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1C=CC2C(CCC3C4CCCC4CCC23)N1

O=C1C=CC2C(CCC3C4CCCC4CCC23)N1

4 rings, 18 atoms.

35 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H302Harmful if swallowed.
  • H361Suspected of damaging fertility or the unborn child.
Precautionary statements (9)
  • P203Obtain, read and follow all safety instructions before use.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P330Rinse mouth.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Dutasteride acid suppliers

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Where suppliers are based

4 suppliers in 2 countries

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Dutasteride acid price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Dutasteride acid is traded under.

HS 2933.79Indicative HS code

Lactams, other lactams

World exports in 2024
$16.2B
−64.4% vs 2023, imports $15.4B
2019 to 2024
Top exporters
  1. Ireland37.0%
  2. France * partner reported15.6%
  3. Spain11.3%
Top importers
  1. Germany27.8%
  2. Ireland18.9%
  3. Panama * partner reported12.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Dutasteride acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Dutasteride acid, based on the data on this page

What is Dutasteride acid?

Dutasteride acid is a chemical substance with the molecular formula C19H27NO3 and a molar mass of 317.43 g/mol. Its CAS registry number is 104239-97-6. The IUPAC name is (1S,3aS,3bS,5aR,9aR,9bS,11aS)-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,5,5a,6,9b,10,11-dodecahydroindeno[5,4-f]quinoline-1-carboxylic acid.

What is the CAS number of Dutasteride acid?

The CAS registry number of Dutasteride acid is 104239-97-6.

What is the molecular formula and weight of Dutasteride acid?

The molecular formula of Dutasteride acid is C19H27NO3 and its molar mass is 317.43 g/mol.

Is Dutasteride acid hazardous?

Dutasteride acid carries the GHS signal word "Warning". Main hazards: harmful if swallowed, suspected of damaging fertility or the unborn child. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dutasteride acid?

Dutasteride acid is usually classified under HS code 293379 (Lactams, other lactams). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dutasteride acid?

CompoundList lists 4 suppliers of Dutasteride acid in China and South Korea. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Dutasteride acid?

Suppliers quote Dutasteride acid on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Dutasteride acid

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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