Molekula
Stanolone
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Stanolone, also known as 5α-dihydrotestosterone (17β-hydroxy-5α-androstan-3-one), is a key steroid intermediate used in pharmaceutical synthesis and a potent androgen, the 5α-reduced metabolite of testosterone, widely used as a reference compound in androgen receptor research. It serves as a foundational building block in steroid chemistry and research applications. This chemical has a CAS number of 521-18-6, with a molecular formula of C19H30O2 and a molecular weight of 290.44 g/mol. It is stored at ambient conditions but requires careful handling due to its hazardous nature, indicated by the "Danger" signal word. Molekula supplies Stanolone from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to off-white crystalline powder |
| Melting Point | 178 - 183℃ |
| Specific rotation | +25 to +31 |
| Loss on Drying | ≤0.5% |
| Assay | ≥96.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 181 °C |
Source: PubChem CID 10635 (DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 51807085 |
| 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 |
| EC Number | 208-307-3 |
| Molecular Formula | C19H30O2 |
| Molecular Weight | 290.44 |
| Exact Mass | 290.2246 |
| SMILES | C[C@]12CCC(=O)C[C@@H]1CC[C@@H]3[C@@H]2CC[C@]4([C@H]3CC[C@@H]4O)C |
| InChIKey | NVKAWKQGWWIWPM-ABEVXSGRSA-N |
| InChI | InChI=1S/C19H30O2/c1-18-9-7-13(20)11-12(18)3-4-14-15-5-6-17(21)19(15,2)10-8-16(14)18/h12,14-17,21H,3-11H2,1-2H3/t12-,14-,15-,16-,17-,18-,19-/m0/s1 |
| PubChem CID | 10635 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| HTS Code | 29372990 |
| Tariff Code | 2937290000 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H351 Suspected of causing cancer
- H360 May damage fertility or the unborn child
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P201 Obtain special instructions before use
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- P270 Do not eat, drink or smoke when using this product
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 4-Dihydrotestosterone
- Anaboleen
- Anabolex
- Andractim
- Androlone
- Androstanolone
- dihydrotestosterone
- Neodrol
- Proteina
- Stanaprol
Frequently asked questions
What is Stanolone (521-18-6) used for?
Stanolone is primarily used as an intermediate in the synthesis of pharmaceuticals, including steroids and hormones, and in research applications.
What is the molecular formula and molecular weight of Stanolone?
The molecular formula is **C19H30O2**, and the molecular weight is **290.44 g/mol**.
What safety classification does Stanolone have, and how should it be handled?
Stanolone is marked with the **signal word 'Danger'** due to its hazardous nature; handle with appropriate PPE and in a well-ventilated area.
What grades of Stanolone does Molekula supply?
Molekula supplies Stanolone in **pharmaceutical-grade and research-grade purity**, depending on application requirements.
Can Molekula supply Stanolone in bulk quantities?
Yes, Molekula can provide Stanolone in bulk, with quantities tailored to meet customer specifications—contact us for details.
What documentation comes with a Stanolone order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.