Oils

Testosterone Isocaproate

Name: Testosterone Isocaproate
Brand: Quanta Pharmaceuticals

A medium-acting testosterone ester bridging short and long esters for stable, twice-weekly research dosing.

Testosterone Isocaproate pairs the primary male androgen with the isocaproate (6-methylheptanoate) ester, a medium-chain ester that sits between propionate and decanoate in release speed. The result is a roughly 7-9 day half-life — long enough for once- or twice-weekly dosing, short enough to avoid the extended lag of longer esters. Each 10ml vial is supplied at a 300mg/ml concentration. Independent lab testing of this batch confirmed accurate dosing at 297.25mg/ml, in line with label claim.

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Specifications

Vial Size

10ml

Concentration

300mg/ml

Half-Life

7-9 days

Administration

Intramuscular

Research Benefits

Balanced release — Medium-chain ester delivers steadier levels than short esters without the lag of longer ones.
Flexible dosing — Once- or twice-weekly administration fits a range of research protocols.
High concentration — 300mg/ml keeps injection volume low per dose.
Verified potency — Independent lab testing confirmed accurate, on-label dosing for this batch.

How It Works

Testosterone Isocaproate is testosterone esterified with a medium-chain fatty acid (6-methylheptanoate). Once injected intramuscularly, esterase enzymes gradually cleave the ester bond, releasing free testosterone into circulation over roughly 7-9 days.

As with all testosterone esters, the released hormone binds androgen receptors throughout skeletal muscle, driving increased protein synthesis, nitrogen retention, and red blood cell production — the core anabolic pathway studied across the entire testosterone ester class.

⚠ For Research Use Only

This product is supplied strictly for in-vitro laboratory and preclinical research use. It is not a drug, food, dietary supplement, or cosmetic, and is not intended for human or animal consumption, diagnosis, treatment, or prevention of any disease. Testosterone Isocaproate must be handled only by qualified individuals trained in proper laboratory safety procedures.

By purchasing, the buyer confirms this product is being acquired for legitimate research purposes and assumes full responsibility for its handling, storage, and use in compliance with all applicable local, national, and international laws.