Liquid RU-58841 50 MG/ML Topical



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RU-58841 is a non-steroidal antiandrogen (NSAA) originally developed by French scientists in the 1970s. It is believed to stop dihydrotestosterone (DHT) and other androgens from binding to receptors in the hair follicles, allowing hair to grow normally.

Sometimes referred to as PSK-3841 or HMR-3841, RU-58841 has a chemical structure similar to RU-58642, a potent antiandrogen. It can be applied topically and may be useful to treat acne, androgenetic alopecia, hirsutism, and other androgen-dependent skin disorders. 

RU-58841 is believed to promote hair growth. It is widely believed to improve the following qualities in hair:

  • Density
  • Length
  • Thickness


The Food and Drug Administration (FDA) has not approved the use of RU-58841, and it cannot be prescribed and sold at pharmacies. 


To date, in vivo testing on hamsters and rats has been used to assess the safety and efficacy on RU-58841. The initial results have been promising: 

  • In one study, researchers transplanted scalp samples from men with androgen-dependent alopecia on to nude female mice. The scalps were maintained for eight months after grafting on to the mice, with monthly monitoring for six months. The grafts treated by RU-58841 produced 29 active follicles, eight of which (28%) showed a second cycle. Also, the values for the linear hair-growth rates (LHGR) were higher in the RU58841-treated group. (B De Brouwer 1, C Tételin, T Leroy, A Bonfils, D Van Neste, A controlled study of the effects of RU-58841, a non-steroidal antiandrogen, on human hair production by balding scalp grafts maintained on testosterone-conditioned nude mice, Journal of Dermatological Science, Volume 137, Issue 5, Nov. 1997, Pages 699-702,
  • Researchers synthesized RU-58841 and discovered it has a high affinity for the hamster prostate and flank organ (F.O.) androgen receptors. When RU-58841 was topically applied in vivo, it delivered a potent dose-dependent regression of the F.O. area at a dose as low as 1 microgram/animal. Furthermore, in intact rats, no side effects of RU-58841 were observed up to 1 microgram/animal. (T Battmann, A Bonfils, C Branche, J Humbert, F Goubet, G Teutsch, D Philibert, RU 58841, a new specific topical antiandrogen: a candidate of choice for the treatment of acne, androgenetic alopecia and hirsutism, The Journal of Steroid Biochemistry and Molecular Biology, Volume 48, Issue 1, Jan. 1994, Pages 55-60,

RU-58841 research is ongoing. More studies that highlight RU-58841’s potential benefits could become available soon. 

RU-58841 Liquid Data

Formula: C17H18F3N3O3

Molar mass: 369.3 g/mol

Class: Androgen Receptor Antagonist

Why Choose Sports Technology Labs?

Hair loss is a problem that plagues millions of people around the world. There is no such thing as a “silver bullet” to stop hair loss, but RU-58841 offers hope. You can find RU-58841 on the internet, but not all varieties are created equal. If you are searching for RU-58841 online, you need to choose a provider that puts quality first. 

Sports Technology Labs is dedicated to providing high-quality RU-58841. Every batch we sell undergoes testing by a third-party American laboratory to verify a minimum of 98% purity. We also list COAs on our website, and our independent lab accepts phone calls to confirm their quality. 

When it comes to RU-58841, there is no need to leave anything to chance. Choose Sports Technology Labs for RU-58841, and we’ll provide you with a quality product that meets your expectations. 


Liquid RU-58841 50 MG/ML Topical
Liquid RU-58841 50 MG/ML Topical Review

This Liquid RU-58841 shipped fast and dries on my scalp better than the brand I used before. So far I have had good results with RU hoping this brand keeps it going.

Product SKU: 58841

Product Brand: Sports Technology Labs

Product Currency: USD

Product Price: 49.99

Price Valid Until: 2024-05-28

Product In-Stock: InStock

Editor's Rating:

Additional information

Weight 3.0 oz