1
Topical application demonstrated potent local anti-androgenic activity without measurable systemic effects in preclinical models.
View on PubMed →
RU-58841 Powder 3g
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RU-58841 is a non-steroidal androgen receptor antagonist investigated for topical applications. In preclinical models, it demonstrated potent local anti-androgenic activity without systemic effects, a critical distinction from oral anti-androgens. Rapid plasma hydrolysis confines its activity to the site of application.
Every batch is independently tested by a 3rd party laboratory. Certificate of Analysis available below.
United KingdomRoyal Mail tracked, no customs
Buying in the UK: fast, secure domestic delivery
This RU-58841 powder is held in stock in our UK warehouse and travels by Royal Mail tracked: a short domestic journey, with no customs involved. Prices are shown in GBP with UK VAT included, so the price on this page is the price paid. UK payments: card and bank transfer (see how to pay).
United StatesTracked, 100% delivery rate
Buying in the USA: shipped from the UK, priced in USD
Orders from the United States ship from the same UK warehouse with tracked international delivery and a 100% delivery rate: we have never had a parcel held at US customs. You pay in USD, by card, crypto or bank transfer, and every bottle comes from the same independently tested batch as the UK orders.
Switzerland and rest of world100% guaranteed delivery
Buying from Switzerland and the rest of the world
Every international parcel is prepared with care to clear customs smoothly, and the vast majority arrive without any delay. If a delivery ever goes wrong, we reship your order or refund it: you are never left without your parcel or your money.
Ordering from inside the European Union? The same product is stocked in our EU warehouse with no customs: see the RU-58841 EU page.
Worldwide ShippingUK · EU · USA · Asia
3rd Party TestedIndependent lab CoA
≥96% HPLC PurityVerified per batch
Safe DeliveryDiscreet packaging
Research Overview
About this compound
What does the research say?
RU-58841 is a non-steroidal androgen receptor antagonist originally developed for topical applications. In preclinical models, topical RU-58841 demonstrated potent local anti-androgenic activity in skin tissue while producing no measurable systemic anti-androgenic effects, a critical distinction from oral anti-androgens.
Published research showed that topical RU-58841 reversed the miniaturisation process in androgen-sensitive hair follicles in the macaque model, producing results comparable to finasteride but through a different mechanism (receptor antagonism vs 5-alpha reductase inhibition). The compound's lack of systemic effects is attributed to rapid hydrolysis in plasma, confining its activity to the site of application.
These are not marketing claims. These are peer-reviewed, published results. You can verify every reference below.
Why does quality matter with RU-58841?
RU-58841 is supplied as a raw powder for compounding. Purity is critical because degradation products may have different receptor binding profiles. Independent testing confirms both identity and purity of the active compound.
At Camo Chem, every batch is tested by an independent 3rd party laboratory. We publish the full Certificate of Analysis for every batch, and you can verify the results directly with the lab. We do not self-certify. Ever.
Ask your current supplier: who tests their products?
Technical Data
Compound specifications
| Common Names | RU-58841, RU58841, PSK-3841 |
| CAS Number | 154992-24-2 |
| Molecular Formula | C₁₇H₁₈F₃N₃O₃ |
| Molecular Weight | 369.34 g/mol |
| Classification | Non-steroidal androgen receptor antagonist |
| Purity | ≥96% (HPLC verified) |
| Content | 3 g raw powder |
| Physical Form | White crystalline powder |
| Solubility | Soluble in ethanol, DMSO, PG |
| Storage | Cool, dry place. Keep sealed once opened. |
Peer-reviewed Studies
Published research on RU-58841
2
Reversed follicle miniaturisation in the macaque model, with results comparable to finasteride through a different mechanism.
View on PubMed →3
Rapid plasma hydrolysis confined activity to the site of application, explaining the lack of systemic effects.
View on PubMed →
Customer Reviews
What researchers are saying
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★★★★★
Its quite difficult for me to tell yet if I am being honest. Im running since a bit over a month now and I hope I will see the first effects soon.
FAQ
Frequently asked questions
Yes, as a research compound. This product is stocked in the Camo Chem UK warehouse and shipped domestically by Royal Mail tracked, £4.99 or free over £65, with GBP pricing and UK VAT included where applicable. Research use only.
Yes. US orders ship from the UK warehouse with tracked international delivery, $19.99 or free over $110, priced in USD. Card, crypto and bank transfer are accepted. The batch and the Certificate of Analysis are the same as for UK orders.
RU-58841 is a non-steroidal androgen receptor antagonist with CAS number 154992-24-2. It was originally developed for topical research applications. It is sold exclusively as a research compound.
Every batch meets a minimum of 96% purity as verified by HPLC. Testing is performed by an independent 3rd party laboratory.
By an independent laboratory not affiliated with Camo Chem. We do not self-certify.
RU-58841 is supplied as 3g of raw crystalline powder. It is not pre-mixed or in solution.
Store in a cool, dry place. Keep the container tightly sealed once opened. Protect from moisture and light.
