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Androstenetrione 6-OXO

Product Name:Androstenetrione,6-OXO
Chemical Name:4-Androstene-3,6,17-trione,6-ketoandrostenedione
CAS NO.:2243-06-3
Molecular Formula:C19H24O3
Molecular Weight: 300.39206
Purity : 99.0%
Grade: Pharmaceutical Grade
Appearance:White crystalline powder
Average Dose: 300-600mg/day
Average Cycle Length: 4-8 weeks


6-OXO, better known as androstenetrione (4-Androstene-3,6,17-trione), is a popular testosterone booster and estrogen blocker. It’s most commonly used among bodybuilders as a post-cycle treatment after exogenous steroid use in order to “jump-start” the body’s natural production of testosterone.

Androstenetrione is heavily-used in post-cycle therapy (PCT) by bodybuilders after steroid cycles.This is because 6-OXO is a steroidal aromatase inhibitor, known as a suicidal inhibitor because it permanently binds to the aromatase enzyme. It is used for its anti-estrogen and testosterone boosting effects.


Less testosterone is converted into estrogen, because the aromatase enzyme is inhibited.

Lowered estrogen increases the pulsatile release of luteinizing hormone (LH), which stimulates T synthesis.

The decreasing estrogen also suppresses SHBG, and therefore increases free testosterone levels.

Because 6-OXO basically deactivates most of the aromatase enzyme, one could expect it to be an extremely powerful “natural” supplement, and effective it seems to be for sure.


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