Stanolone

About Stanolone

Stanolone is a process intermediate or related compound of Testosterone carrying the CAS registry number 521-18-6. The compound has the formula C19H30O2, corresponding to a molecular weight of 290.4 g/mol. Alternative names: (5α,17β)-17-Hydroxyandrostan-3-one and 17β-hydroxy-5α-androstan-3-one.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Process chemists and analysts use it when developing synthetic routes to Testosterone, tracking process-related impurities and validating analytical methods. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Stanolone is dispatched with a Certificate of Analysis (COA) to destinations worldwide. Stock is available for quick dispatch.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development

Industries

Related to Testosterone

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

Testosterone impurities

Specifications & identifiers

Chemical identifiers
Product name	Stanolone
Catalogue No.	VQ-013800
CAS Number	521-18-6
IUPAC name	(5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-10,13-dimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one
Molecular formula	C₁₉H₃₀O₂
Molecular weight	290.4 g/mol
Exact mass	290.2246
Grade	Reference Standard
InChIKey	NVKAWKQGWWIWPM-ABEVXSGRSA-N
SMILES	C[C@]12CCC(=O)C[C@@H]1CC[C@@H]3[C@@H]2CC[C@]4([C@H]3CC[C@@H]4O)C
PubChem CID	10635

Physical properties
Physical form	Solid
LogP (XLogP3)	3.7
H-bond donors / acceptors	1 / 2
TPSA	37.3 Å²
Synonyms	(5α,17β)-17-Hydroxyandrostan-3-one, 17β-hydroxy-5α-androstan-3-one, 4,5α-Dihydrotestosterone, 5α,17β-Hydroxyandrostan-3-one, 5α-Androstan-17β-ol-3-one, 5α-Androstanolone, 5α-Dihydrotestosterone, Androstanolone, Dihydro Testosterone, dihydrotestosterone, Androlone, Neodrol

Safety & hazard information (GHS)

Health hazard

Signal word: Danger

Hazard statements

H351Suspected of causing cancer
H360May damage fertility or the unborn child

Precautionary statements: P203, P280, P318, 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 Stanolone?

The CAS Registry Number of Stanolone is 521-18-6. It is also known as (5α,17β)-17-Hydroxyandrostan-3-one, 17β-hydroxy-5α-androstan-3-one, 4,5α-Dihydrotestosterone.

What is the molecular formula and molecular weight of Stanolone?

Stanolone has the molecular formula C19H30O2 and a molecular weight of 290.4 g/mol. Its IUPAC name is (5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-10,13-dimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one.

What is Stanolone used for?

Stanolone is supplied as a characterised reference material related to Testosterone. 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 Stanolone can I order?

We supply Stanolone in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg, 250 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Stanolone?

Yes. Every lot of Stanolone 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 Stanolone be shipped internationally?

Yes. Stanolone 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.