Oral Steroid

Fluoxymesterone

CAS 76-43-7
Formula C₂₀H₂₉FO₃
Half-life 9.2 hours (oral)
Detection 2 months

Chemical Identity

CAS Number	`76-43-7`
IUPAC Name	(8S,9R,10S,11S,13S,14S,17S)-9-fluoro-11,17-dihydroxy-10,13,17-trimethyl-1,2,4,5,6,7,8,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one
Molecular Formula	C₂₀H₂₉FO₃
Molecular Weight	336.44 g/mol
SMILES	`C[C@]1(O)CC[C@@H]2[C@H]3C[C@@H](O)[C@@]4(F)CC(=O)CC[C@]4(C)[C@@H]3CC[C@@H]12`
InChIKey	`YLRFCQOZQXIBAB-RBZZARIASA-N`
Melting Point	240 (decomposition) °C
Solubility	Practically insoluble in water; sparingly soluble in alcohol
Half-life	9.2 hours (oral)

Pharmacological Profile

Anabolic Rating	1900
Androgenic Rating	850
Aromatisation	None
Hepatotoxicity	High
Detection Window	2 months

Known trade names

Halotestin
Ultandren
Stenox

External references

Data sourced from peer-reviewed pharmacological literature and authoritative chemical databases (PubChem, DrugBank, ChEBI). Provided for identification and research reference only — not medical advice.