Fluoxymesterone
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| Fluoxymesterone
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| Systematic (IUPAC) name
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| 9-fluoro-11,17- dihydroxy-10,13,17- trimethyl-1,2,6,7,8,11,12,14,15,16- decahydrocyclopenta[a] phenanthren-3-one
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| Identifiers
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| CAS number
| 76-43-7
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| ATC code
| G03BA01
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| PubChem
| 6446
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| DrugBank
| APRD00981
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| Chemical data
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| Formula | C20H29FO3
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| Mol. mass | 336.441 g/mol
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| Pharmacokinetic data
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| Bioavailability | 100% Oral
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| Metabolism | Hepatic
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| Half life | 9.5 hours
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| Excretion | urine
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| Therapeutic considerations
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| Pregnancy cat.
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?
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| Legal status
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| Routes
| ?
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Fluoxymesterone (Halotestin) is an androgenic steroid that is only useful to a small select group of athletes who seeks very specific goals. Athletes tend to use it to increase strength and aggression in the gym or in competitions such as strongman contests, fighting (like boxing) or MMA. The lack of estrogenic activity makes Halotestin perfect for pre-fight usage – as weigh-ins would not be effected by water retention. Even in such an events, Fluoxymesterone usage is usually limited to mere few weeks rather than cycled like real steroids for months.
Fluoxymesterone (Halotestin) has poor binding to the AR. Studies have shown the effects to be mostly non-AR mediated. However, it is considered a very toxic oral drug, and a poor choice in most bodybuilding/steroid use applications.
The half life of Fluoxymesterone (Halotestin) is commonly misunderstood. The rumored belief is that 30-90 minutes is the half-life but this rumor is false, the half life of Fluoxymesterone is about 9.5 hours.
References
Further reading
Daniels, R. C. (February 1, 2003). The Anabolic Steroid Handbook. Richard C Daniels, 80. ISBN 0-9548227-0-6.
| Sex hormones and related agents (primarily G03, also L02, H01C) - human endogenous in CAPS |
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Progestogens:
(receptor) | PROGESTERONE, Desogestrel, Drospirenone, Dydrogesterone, Ethisterone, Etonogestrel, Ethynodiol diacetate, Gestodene, Gestonorone, Levonorgestrel, Lynestrenol, Medroxyprogesterone, Megestrol, Norelgestromin,
Norethisterone, Norethynodrel, Norgestimate, Norgestrel, Norgestrienone, Tibolone
Selective progesterone receptor modulator: Asoprisnil, CDB-4124
Antiprogestogen: Mifepristone |
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Androgens:
(receptor) | TESTOSTERONE, Androstanolone, Fluoxymesterone, Mesterolone, Methyltestosterone, (see also anabolic steroids)
Antiandrogens: Bicalutamide, Cyproterone, Flutamide, Nilutamide, Spironolactone |
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Estrogens:
(receptor) | ESTRADIOL, ESTRIOL, ESTRONE, Chlorotrianisene, Dienestrol, Diethylstilbestrol, Ethinylestradiol, Fosfestrol, Mestranol, Polyestradiol phosphate
Selective estrogen receptor modulator: Bazedoxifene, Clomifene, Fulvestrant, Lasofoxifene, Raloxifene, Tamoxifen, Toremifene
Aromatase inhibitor: Aminogluthetimide, Anastrozole, Exemestane, Formestane, Letrozole, Vorozole |
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Gonadotropins:
(FSHR/LHCGR) | ovulation stim.: Clomifene, Urofollitropin
Antigonadotropins:
Danazol, Gestrinone |
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GnRH:
(receptor) | agonist: Buserelin, Goserelin, Histrelin, Leuprorelin, Nafarelin, Triptorelin
antagonist:
Abarelix, Cetrorelix, Ganirelix |
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