Testosterone isobutyrate

Testosterone isobutyrate, sold under the brand names Agovirin-Depot and Perandren M among others, is an androgen and anabolic steroid medication and a testosterone ester which is used for indications such as low testosterone levels in men and delayed puberty in boys. It is available only in the Czech Republic and Slovakia. The medication is administered by injection into muscle once every 1 to 2 weeks in males. Unlike most other testosterone esters, which are provided as oil solutions, testosterone isobutyrate is formulated as a microcrystalline aqueous suspension.

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Testosterone isobutyrate
Clinical data
Trade namesAgovirin-Depot, Perandren M, Testocryst, Virex-Cryst
Routes of
administration
Intramuscular injection
Drug classAndrogen; Anabolic steroid; Androgen ester
ATC code
Pharmacokinetic data
MetabolitesTestosterone
Duration of action~2 weeks
Identifiers
  • [(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] 2-methylpropanoate
CAS Number
PubChem CID
ChemSpider
UNII
CompTox Dashboard (EPA)
ECHA InfoCard100.013.293
Chemical and physical data
FormulaC23H34O3
Molar mass358.522 g·mol−1
3D model (JSmol)
  • CC(C)C(=O)O[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4=CC(=O)CC[C@]34C)C
  • InChI=1S/C23H34O3/c1-14(2)21(25)26-20-8-7-18-17-6-5-15-13-16(24)9-11-22(15,3)19(17)10-12-23(18,20)4/h13-14,17-20H,5-12H2,1-4H3/t17-,18-,19-,20-,22-,23-/m0/s1
  • Key:PYHZLMFTKOTWGQ-WAUHAFJUSA-N
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