RU-58841 (also known as PSK-3841 or HMR-3841) is a nonsteroidal antiandrogen (NSAA) which was previously investigated for use as a topical treatment for acne, androgenetic alopecia, and hirsutism. The compound is similar in structure to RU-58642 but contains a different side-chain. These compounds are similar in chemical structure to nilutamide, which is related to flutamide, bicalutamide, and enzalutamide. RU-58841 can be synthesized either by building the hydantoin moiety or by aryl coupling to 5,5-dimethylhydantoin.
If using on your hairline, be aware that the RU solution is a bit watery so its best to apply WITHIN and behind the hairline. You'll want to preserve what may be receded but potentially also regrow any hair. This way, youre not just applying it the slick bald spots, you want to maintain as well! If you apply it just outside the hairline to regrow anything, you'll find that a lot of runs down your noggin and go to waste.
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