Pharmacological Profile of 9,11-Dehydrocortexolone 17α-Butyrate (CB-03-04), a New Androgen Antagonist with Antigonadotropic Activity

Clascoterone, a topical anti-androgen, is generating interest for potentially fewer systemic side effects. Users are curious about its effectiveness and details like concentration and duration of use.

CB-03-01 is considered too costly and lacks a proper delivery method, making it less viable compared to RU58841, which has shown effectiveness with minimal side effects. Finasteride caused a drop in libido for one user.

The conversation discusses using cyproterone acetate at 12.5 mg to manage hair loss, with concerns about its effects on testosterone and potential health issues. Other treatments mentioned include finasteride, dutasteride, minoxidil, and RU58841, with varying experiences and outcomes.

Some users have experienced good hair regrowth with estradiol, cyproterone acetate, spironolactone, and bicalutamide, but these treatments may cause feminization and other side effects. It's advised to consult a doctor before using these treatments, as they can lower testosterone and have significant risks.

The conversation is about finding sources for topical anti-androgens like CB, pyrilutamide, fluridil, and aflatridol for hair loss treatment. The user is considering using CB powder from IndiaMart but is concerned about side effects from finasteride and minoxidil.

FCE 28260 (PNU 156765), an under-explored 5α-reductase inhibitor, showcases promising results in research by Giudici et al., outperforming well-known treatments like Finasteride in reducing the conversion of testosterone to DHT. Its superior efficacy, demonstrated through lower IC50 values in both natural and human recombinant enzyme studies, suggests it could offer more effective management of DHT-related conditions. Additionally, its lower molecular weight hints at better potential for topical application, potentially offering advantages in treating conditions such as androgenic alopecia. Despite its potential, it has not advanced in development, possibly due to financial limitations, leaving its therapeutic prospects and side effect profile largely unexplored.