Testosterone undecanoate

Testosterone undecanoate
Testosterone undecanoate
Systematic (IUPAC) name
[(8R,9S,10R,13S,14S,17S)-10,13-dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl] undecanoate
Clinical data
Pregnancy cat. X (USA), Teratogenic effects
Legal status Schedule III (USA)
Schedule IV (Canada)
Routes oral,I.V
Pharmacokinetic data
Bioavailability 7%
Metabolism Liver, Testis and Prostate
Half-life 1-12 days
Excretion Urine
Identifiers
CAS number 5949-44-0
ATC code G03BA03
PubChem CID 65157
ChemSpider 23089522 YesY
KEGG D06087 YesY
Chemical data
Formula C30H48O3 
Mol. mass 456.70032
 YesY(what is this?)  (verify)

Testosterone undecanoate or testosterone undecylate is an ester of testosterone which is used for the treatment of male hypogonadism, and is currently under research for use as a male contraceptive. It is sold and distributed under the brand names Andriol, Undestor, Nebido, Pantestone, Restandol, Cernos Depot and Nebido-R and Reandron 1000.[1]

Andriol is a version of the anabolic steroid testosterone undecanoate developed by the pharmaceutical company Organon. This testosterone preparation is encapsulated and sealed in an oil base in a 40 mg capsule taken orally. According to Organon, this method bypasses the liver, preventing it from being damaged by the liver and from adding damaging stresses to the liver found in other testosterone preparations. It is said to enter the body as a fat through the lymphatic system. Experience from users indicates that in doses of less than 240 mg per day, effects are negligible, except at the very onset of use, while even in higher doses, effects are still minimal. It is therefore thought that most of the steroid is somehow not making it into the blood stream.[2]

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