Stanozolol EP Impurity A

Name: Stanozolol EP Impurity A
Brand: Vaqora Chemicals
SKU: VQ-028120

About Stanozolol EP Impurity A

Stanozolol EP Impurity A is a pharmacopeial impurity of Stanozolol carrying the CAS registry number 521-11-9. Its molecular formula is C20H32O2 and its molecular weight is 304.5 g/mol. It is also known as Stanozolol - Impurity A or mestanolone.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

This Stanozolol impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

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

Industries

Related to Stanozolol

View every impurity, metabolite and intermediate we list for Stanozolol.

Stanozolol impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Stanozolol EP Impurity A
Catalogue No.	VQ-028120
CAS Number	521-11-9
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 formula	C₂₀H₃₂O₂
Molecular weight	304.5 g/mol
Exact mass	304.2402
Grade	Reference Standard
HSN code	38229090
InChIKey	WYZDXEKUWRCKOB-YDSAWKJFSA-N
SMILES	C[C@]12CCC(=O)C[C@@H]1CC[C@@H]3[C@@H]2CC[C@]4([C@H]3CC[C@]4(C)O)C
PubChem CID	10633

Physical properties
Physical form	Solid
LogP (XLogP3)	3.8
H-bond donors / acceptors	1 / 2
TPSA	37.3 Å²
Synonyms	Stanozolol - 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

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

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 is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Stanozolol EP Impurity A?

The CAS Registry Number of Stanozolol EP Impurity A is 521-11-9. It is also known as Stanozolol - Impurity A, mestanolone, Methybol.

What is the molecular formula and molecular weight of Stanozolol EP Impurity A?

Stanozolol EP Impurity A has the molecular formula C20H32O2 and a molecular weight of 304.5 g/mol. Its 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.

What is Stanozolol EP Impurity A used for?

Stanozolol EP Impurity A is supplied as a characterised reference material related to Stanozolol. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Stanozolol EP Impurity A can I order?

We supply Stanozolol EP Impurity A in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Stanozolol EP Impurity A?

Yes. Every lot of Stanozolol EP Impurity A is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Stanozolol EP Impurity A be shipped internationally?

Yes. Stanozolol EP Impurity A is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.