Sustanon 250mg/mL | Quad-Ester Testosterone | 10-Vial

Sustanon 250 (Testosterone Propionate 30mg + Testosterone Phenylpropionate 60mg + Testosterone Isocaproate 60mg + Testosterone Decanoate 100mg) 250mg/mL Injectable | 10-Vial Kit

Sustanon 250mg/mL — quad-ester testosterone blend (sustanon 250) research injectable, 10-vial kit. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

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

$280

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAPharmaceutical-GradeChina Warehouse

What is Sustanon (Testosterone Propionate 30mg + Testosterone Phenylpropionate 60mg + Testosterone Isocaproate 60mg + Testosterone Decanoate 100mg)?

Sustanon 250 is a four-ester testosterone preparation delivering 250mg/mL total testosterone via four distinct release phases: Testosterone Propionate 30mg (rapid onset, ~1–2 days), Testosterone Phenylpropionate 60mg (short-medium, ~3–5 days), Testosterone Isocaproate 60mg (medium, ~7–9 days), and Testosterone Decanoate 100mg (long-acting, ~14–16 days). The original multi-ester testosterone formulation used as a pharmacokinetic reference in androgen research. Research use only.

Research Applications

Multi-Ester Testosterone Pharmacokinetics

Four-phase serum testosterone profiling — Cmax, half-life and AUC per ester component

HPG Axis Suppression Models

LH/FSH suppression dynamics, GnRH pulse frequency reduction, negative feedback

Testosterone Replacement Research

Physiological vs supraphysiological androgen repletion kinetics, SHBG modulation

Aromatisation Studies

Estradiol conversion rate, aromatase enzyme activity, estrogen receptor interaction

Comparative Ester Research

Propionate vs phenylpropionate vs isocaproate vs decanoate — relative hydrolysis rates

Quick Specs

Form	Injectable solution
Concentration	250mg/mL
CAS	57-85-2 / 1255-49-8 / 15262-86-9 / 5721-91-5
Molecular Formula	TestP C₂₂H₃₂O₃ + TestPP C₂₈H₃₆O₃ + TestIC C₂₅H₃₆O₃ + TestD C₂₉H₄₄O₃
MW	344.5 / 420.6 / 388.6 / 456.7
Purity	≥99% by HPLC — every batch
Identity	MS confirmed — every batch
COA	Janoshik-independent, publicly verifiable
Vehicle	Pharmaceutical-grade oil (USP/BP) — Arachis oil / Benzyl benzoate / Benzyl alcohol
Storage	Room temperature 15–25°C \| Protect from light \| Do not freeze
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 this QSC injectable supplied?

QSC injectable solutions are supplied ready-to-use — no reconstitution required. Each vial contains the stated concentration in pharmaceutical-grade carrier (oil or aqueous). Draw using a sterile syringe appropriate for the solution viscosity.

How should this QSC injectable be stored?

Oil-based solutions: store at room temperature (15–25°C), away from direct sunlight — do not refrigerate as cold temperatures can cause crystallisation. Aqueous solutions: store at 2–8°C. Properly stored, injectable solutions are stable for 2–3 years.

What purity is this QSC injectable and how is it verified?

All QSC injectable compounds are ≥99% pure by HPLC on every production batch, with MS-confirmed identity. 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