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Pharmacopeial Impurities (EP / USP / BP)

Finasteride EP Impurity A

Reference StandardAvailable on request

Order Finasteride EP Impurity A (CAS 98319-24-5) online at Zemixal. Request a quote with price, lead time and documents.

Pack sizes
Finasteride EP Impurity A chemical structure
CAS number98319-24-5
FormulaC23H38N2O2
Molar mass374.6 g/mol
Physical formSolid
HS code38229090
InChIKeyZOIUUCNFVDJSJK-WSBQPABSSA-N
IUPAC name(1S,3aS,3bS,5aR,9aR,9bS,11aS)-N-tert-butyl-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,5,5a,6,8,9,9b,10,11-tetradecahydroindeno[5,4-f]quinoline-1-carboxamide

About Finasteride EP Impurity A

Analytical teams working on Finasteride use Finasteride EP Impurity A as a qualified comparison standard. For your records (Reference Standard), the material is defined by CAS 98319-24-5, formula C23H38N2O2 and molar mass 374.6 g/mol. It is handled as a solid.

Where it is used

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Handling and storage

It carries the GHS signal word Warning (H302, H312, H315 and H319), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Every shipment includes a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Finasteride

See every impurity, metabolite and related compound we list for this API.

Finasteride standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Finasteride EP Impurity A
Product nameFinasteride EP Impurity A
Catalogue numberZX-024740
CAS number98319-24-5
IUPAC name(1S,3aS,3bS,5aR,9aR,9bS,11aS)-N-tert-butyl-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,5,5a,6,8,9,9b,10,11-tetradecahydroindeno[5,4-f]quinoline-1-carboxamide
Molecular formulaC23H38N2O2
Molar mass374.6 g/mol
Exact mass374.2933
GradeReference Standard
Physical formSolid
XLogP34
H-bond donors / acceptors2 / 2
Topological polar surface area58.2 Ų
HS code38229090
InChIKeyZOIUUCNFVDJSJK-WSBQPABSSA-N
SMILESC[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@H]2C(=O)NC(C)(C)C)CC[C@@H]4[C@@]3(CCC(=O)N4)C
PubChem CID9864387
SynonymsFinasteride Impurity A, Dihydrofinasteride, Finasteride - Impurity A, Dihydro Finasteride, 1,2-Dihydrofinasteride, 3-Oxo-4-aza-5-alpha-androstane-17-beta-N-t-butylcarboxamide, (5, A,17, A)-N-(1,1-Dimethylethyl)-3-oxo-4-aza-androstane-17-carboxamide, 3-oxo-4-aza-5a-androstane-17beta-(n-t-butylcarboxamide), EX-A1946, 17beta-(tert-Butylcarbamoyl)-4-aza-5alpha-androstan-3-one, N-(tert-Butyl)-3-oxo-4-aza-5-androstane-17-carboxamide

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful
GHS08 Health hazard
Health hazard

Signal word Warning

  • H302Harmful if swallowed
  • H312Harmful in contact with skin
  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H332Harmful if inhaled
  • H335May cause respiratory irritation
  • H341Suspected of causing genetic defects

Precautionary statements P203, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P317, P318, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Finasteride EP Impurity A
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Finasteride EP Impurity A

Which CAS number identifies Finasteride EP Impurity A?
Finasteride EP Impurity A is registered under CAS 98319-24-5. You may also see it listed as Finasteride Impurity A, Dihydrofinasteride, Finasteride - Impurity A. Our catalogue number for this item is ZX-024740.
What are the formula and molar mass of Finasteride EP Impurity A?
For Finasteride EP Impurity A, its formula is C23H38N2O2 and its molar mass is 374.6 g/mol. The systematic (IUPAC) name is (1S,3aS,3bS,5aR,9aR,9bS,11aS)-N-tert-butyl-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,5,5a,6,8,9,9b,10,11-tetradecahydroindeno[5,4-f]quinoline-1-carboxamide. InChIKey ZOIUUCNFVDJSJK-WSBQPABSSA-N lets you match it in any structure database.
How is Finasteride EP Impurity A used in pharmaceutical QC?
Finasteride EP Impurity A is a characterised reference material linked to Finasteride. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Finasteride EP Impurity A?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Finasteride EP Impurity A?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Finasteride EP Impurity A to my country?
Yes. Because Finasteride EP Impurity A is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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