What it is
A non-steroidal anti-androgen studied historically for topical use in androgenetic alopecia and acne. Development was discontinued; available only as a research chemical.
How it works
Competitive antagonist of the androgen receptor at the level of the hair follicle, blocking DHT and testosterone binding to inhibit androgen-driven follicle miniaturization in preclinical models.
Where it's used
Investigated in early-stage research for androgenetic alopecia; never advanced to approval. Used outside any clinical framework via research-chemical suppliers.
Regulatory status
Not FDA-approved; research compound.
Reconstitution
Typically dissolved by users in alcohol or propylene-glycol carriers for topical application; no standardized pharmaceutical formulation exists.
Tracking it
Logging every administration of RU58841 builds the record that makes patterns visible.
Source
Public reference
Last reviewed 2026-06-11