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Pharmacopeial Impurities (EP / USP / BP)

Stanozolol EP Impurity A

Reference StandardAvailable on request

Buy Stanozolol EP Impurity A (CAS 521-11-9) from Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-027022.

Pack sizes
Stanozolol EP Impurity A chemical structure
CAS number521-11-9
FormulaC20H32O2
Molar mass304.5 g/mol
Physical formSolid
HS code38229090
InChIKeyWYZDXEKUWRCKOB-YDSAWKJFSA-N
IUPAC name(5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-10,13,17-trimethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one

About Stanozolol EP Impurity A

Stanozolol EP Impurity A is supplied by Zemixal as a characterised reference material for Stanozolol analysis. Key data (Reference Standard): CAS 521-11-9, formula C20H32O2 and molar mass 304.5 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Handling and storage

Hazard communication follows GHS (Danger: H312, H332, H351 and H360). Our SDS lists exposure controls and first-aid measures.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Stanozolol

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

Stanozolol 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 Stanozolol EP Impurity A
Product nameStanozolol EP Impurity A
Catalogue numberZX-027022
CAS number521-11-9
IUPAC name(5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-10,13,17-trimethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one
Molecular formulaC20H32O2
Molar mass304.5 g/mol
Exact mass304.2402
GradeReference Standard
Physical formSolid
XLogP33.8
H-bond donors / acceptors1 / 2
Topological polar surface area37.3 Ų
HS code38229090
InChIKeyWYZDXEKUWRCKOB-YDSAWKJFSA-N
SMILESC[C@]12CCC(=O)C[C@@H]1CC[C@@H]3[C@@H]2CC[C@]4([C@H]3CC[C@]4(C)O)C
PubChem CID10633
SynonymsStanozolol - Impurity A, mestanolone, Methybol, Tantarone, 17alpha-methylandrostan-3-on-17beta-ol, 17beta-Hydroxy-17alpha-methyl-3-androstanone, 17beta-Hydroxy-17-methyl-androstan-3-one, 17alpha-Methylandrostan-17beta-ol-3-one, Ermalone, Preroide, Mestalone, Methyldihydrotestosterone

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 Danger

  • H312Harmful in contact with skin
  • H332Harmful if inhaled
  • H351Suspected of causing cancer
  • H360May damage fertility or the unborn child
  • H362May cause harm to breast-fed children

Precautionary statements P203, P260, P261, P263, P264, P270, P271, P280, P302 + P352, P304 + P340, P317, P318, P321, P362 + P364, 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 Stanozolol 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 Stanozolol EP Impurity A

Which CAS number identifies Stanozolol EP Impurity A?
Stanozolol EP Impurity A is registered under CAS 521-11-9. You may also see it listed as Stanozolol - Impurity A, mestanolone, Methybol. Our catalogue number for this item is ZX-027022.
What are the formula and molar mass of Stanozolol EP Impurity A?
For Stanozolol EP Impurity A, its formula is C20H32O2 and its molar mass is 304.5 g/mol. The systematic (IUPAC) name is (5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-10,13,17-trimethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one. InChIKey WYZDXEKUWRCKOB-YDSAWKJFSA-N lets you match it in any structure database.
How is Stanozolol EP Impurity A used in pharmaceutical QC?
Stanozolol EP Impurity A is a characterised reference material linked to Stanozolol. 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 Stanozolol 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 Stanozolol 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 Stanozolol EP Impurity A to my country?
Yes. Because Stanozolol 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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