QSC Peptides · 650:250 ratio · ~1-2 day t½
MENT (Trestolone Acetate) — 7α-methyl-19-nortestosterone — has the highest reported anabolic rating of any injectable AAS at approximately 650:250 anabolic:androgenic. Does not undergo 5α-reduction to an inactive metabolite. Potent progestin. Aromatizes to 7α-methyl-estradiol. QSC Peptides offers 50mg/mL in 10-vial kits — ≥99% purity, free USA shipping.
MENT (Trestolone Acetate) is 7α-methyl-19-nortestosterone acetate — combining the 19-nor modification (like nandrolone and trenbolone) with a 7α-methyl group that provides additional metabolic resistance. The result is the most anabolically potent injectable AAS in the QSC Peptides catalog.
Unlike nandrolone (which 5α-reduces to inactive DHN), MENT undergoes 5α-reduction to 7α-methyl-DHN — which retains significant AR binding affinity. This prevents the androgenic attenuation seen with nandrolone, explaining why MENT's androgenic ratio (~250) is much higher than nandrolone's (~37) despite both being 19-nor compounds.
MENT aromatizes via CYP19A1 to 7α-methyl-estradiol — which has higher estrogen receptor binding affinity than native estradiol and is resistant to hepatic degradation. This unique estrogenic metabolite makes MENT research valuable for studying novel estrogenic profiles.
MENT has been specifically studied as a male contraceptive research compound due to its exceptionally potent suppression of spermatogenesis via combined AR and PR effects at the hypothalamic-pituitary level, with potential for testosterone replacement via its own androgenic/estrogenic activity.
QSC Peptides · 650:250 ratio · ~1-2 day t½