RU58841 Powder
  • RU58841 Powder3 grams

    Molecular Formula:  C17H18F3N303

    CAS: 154992-24-2

    Purity: >99% (See test reports  here)

    Each unit comes with a calibrated dropper with 0.25, 0.50, 0.75 and 1.0 ml marks


  • 3 Grams for $45 (equivalent to 5 grams for $75, or $15 per gram). 3x3gram package is also offered for $105 ($11.6 per gram).



  • Three (3) grams of RU58841 is packed in a 60 ml bottle for convenient usage. FYI,  Dissolving the whole 3 grams in a 60 ml solvent makes a 5% solution. The bottle is made of HDPE plastic that is resistant to most common solvents. It does not break during shipping like glass bottles.

    The RU58841 powder can be dissolved in any minoxidil products we offer to make a minoxidil & Ru58841 combo. How to do it? Pour 60 ml minoxidil products to the bottle with 3 grams of RU58841 and shake the bottle until all powder is dissolved. 

    The bottle is air-tight sealed to prevent any moisture for long time storage. 

    When 9 gram option is selected, you will receive 3 bottles, each containing 3 grams of RU-58841 powder.

    Storage temperature: ≤ 25o  (no higher than 25 Celsius degree).



  • RU58841 powder

    RU-58841 powder


  • For your convenience, we have premade RU58841 solution available. Check it out here.

    If you want to make your own solution, we also offer PG Sovent and PG Free Solvent which can be used to dissolve this material. 



  • What is RU58841?

    It is a nonsteroidal anti-androgen (NSAA). Its structure is shown below. It was investigated and developed by ProStrakan for its potential therapeutic applications in conditions that were driven by androgens. Conditions, such as acne, hirsutism (excessive hair growth), and androgenetic alopecia. ProStrakan conducted two clinical studies, phase I and II, and the results of 5% RU-58841, when applied twice daily, were reported to stimulate hair growth.


    How does it work?

    As a non-steroidal anti-androgen, RU binds itself to androgen receptors and directly inhibits the effects of endogenous (from our own body) androgens such as testosterone and dihydrotestosterone (DHT). As a first generation non-steroidal anti-androgen, it selectively competes for the androgen receptors. This competition effectively attenuates the activity of testosterone and DHT, leading to an overall anti-androgen effect. 

    The way it works is similar to that of spironolactone, and ketoconazole, a key ingredient used in hair loss shampoo.

    It differs from finasteride or dutasteride, which inhibits the activity of 5α-Reductase, an enzyme that converts testosterone into dihydrotestosterone (DHT). DHT is the primary hormone that causes hair loss in men. See the figure below.

    Based on the mechanism, it is apparent that finasteride and dutasteride may lead to a decreased DHT level, while RU58841 does not. DHT is pivotal to a male's sexual functionality, that is reason why some people choose RU instead of finasteride. This is also why more people are using topical finasteride instead of oral form to avoid its systemic effect (lowering DHT on the scalp instead of the whole body).





  • The chemical is intended for research purposes only.  This research compound is not approved by the FDA. We strongly advise you to familiarize yourself with it before any handling process.  Misapplication of the product can be hazardous.


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Verified Buyer
The most effective product I used for my hairline and thickness. I mixed it with DualGen and definitely noticed a difference since I started adding it
Verified Buyer
Legit RU58841
So I've tried RU58841 over the last year or so. Before from a company that no longer exists and also from Aliexpress. I had a pretty big shed both times and saw no gains if I'm being honest with myself. I mixed this RU58841 with dualgen 5 fast dry. After around a month my hairs stopped falling out and it seemed like 100 hairs before. Needless to say the stuff is legit and I've been using minoxidilmax on and off for years so I do trust them. Was a nice touch ordering dualgen 5 and getting free RU58841 for my first non guest checkout and will order again.
Verified Buyer
Stabilized my hair loss. Gave regrowth a fighting chance
Using RU for a number of months now (purchasing powder and mixing it into dualgen-r previously was using it in its own bottle) My hair loss has stabilized, barely any hairs in shower drain or when running hand through my hair. Certain less than the normal amount to lose. The androgen blocking effects of RU and other dht blockers (dutasteride oral 0.5mg) allowed for regrowth to occur. Photos taken 6 months apart right after a hair cut (practically same hair cut each time) and with same lighting. Still a long way to go but so far so good!
Verified Buyer
Love the product.
I want to add RU58841 to the minoxidil solution that I have been using. This is perfect for that.
Verified Buyer
3 Months In
Not much hair growth yet, but I’ve certainly noticed my hair is almost completely stopped shedding. It’s still early, so I will update in a few more months.
Verified Buyer
Finally Minoxmax offer this product. Thank you.
Verified Buyer
Fast shipping
The order was received in less than one week.
Verified Buyer
Doing great so far 3 months in
The before pic was after I got it styled and first saw that I had severe thinning on my crown area. I shaved my head and the after picture is 63 days into growing it out but using RU. I used it 2x a day and it seems to be really showing results
Verified Buyer
Excellent service
I have been a customer of minoxidilmax for more than 8 years. I asked if they could provide this product and they listened.