Testosterone Enanthate 300mg/mL | 20-Vial Kit

Testosterone Enanthate 300mg/mL Injectable | 20-Vial Kit

Testosterone Enanthate 250mg/mL — long-acting esterified testosterone, 20-vial kit. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

✓ 99%+ Purity	✓ COA Available
✓ Free Shipping on All Orders	✓ Ships from China (🇨🇳)

$550

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SynthesisChina Warehouse

What is Testosterone Enanthate?

Testosterone Enanthate (Long-acting esterified testosterone (injectable)) is a testosterone enanthate ester — C₂₆H₄₀O₃, MW 400.6. Esterified testosterone hydrolysed to free testosterone after intramuscular injection (peak ~2–4 days, active ~10–14 days). Free testosterone activates the androgen receptor (AR) producing anabolic effects in muscle, bone, and CNS. Aromatases to oestradiol via CYP19A1 — both AR and ERα/β signalling.

Research Applications

Androgen Receptor Biology

AR binding, nuclear translocation, androgen-responsive gene expression

TRT Research Model

Male hypogonadism, testosterone restoration, androgen deficiency

Muscle Anabolism

Protein synthesis, IGF-1 upregulation, satellite cell activation

Aromatisation Research

CYP19A1 conversion to oestradiol — oestrogenic co-effects

HPG Axis Feedback

Hypothalamic-pituitary-gonadal axis suppression and recovery

Quick Specs

Form	Oil-based injectable solution
Concentration	250mg/mL
CAS	315-37-7
Molecular Formula	C₂₆H₄₀O₃
MW	400.6 Da
Purity	≥99% by HPLC — every batch
Identity	MS molecular weight confirmed — every batch
COA	Janoshik-independent, publicly verifiable
Vehicle	Pharmaceutical-grade carrier oil + benzyl alcohol/benzoate
Storage	Room temp sealed \| 2–8°C recommended
Shelf Life	24 months (unopened)

Certificate of Analysis (COA)

For the latest Certificate of Analysis (COA), please email us with your request.

Frequently Asked Questions

How is QSC Testosterone supplied?

QSC Testosterone esters are supplied as ready-to-use oil-based injectable solutions — no reconstitution required. Each vial contains the stated concentration in pharmaceutical-grade carrier oil. Warm the vial briefly in your hand before drawing.

How should injectable Testosterone be stored?

Store at room temperature (15–25°C), away from direct sunlight. Oil-based testosterone solutions are stable for 2–3 years properly stored. Do not refrigerate as this can cause crystallisation of the ester in the oil.

What purity is QSC Testosterone and how is it verified?

QSC Testosterone injectable solutions are ≥99% HPLC pure with MS-confirmed identity on every batch. COA is published on the product page and independently verifiable at verify.janoshik.com.

🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.

🌏 Shipping: China warehouse — 7–14 day global delivery