Supertest 450 | Penta-Ester Testosterone | 20-Vial

Supertest 450 (Testosterone Phenylpropionate 73mg + Testosterone Acetate 32mg + Testosterone Decanoate 147mg + Testosterone Propionate 73mg + Testosterone Cypionate 125mg) 450mg/mL Injectable | 20-Vial Kit

🇺🇸 1-Region Domestic Shipping
Supertest 450 450mg/mL — penta-ester testosterone blend (450mg/mL) research injectable, 20-vial kit. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

🌍 Domestic shipping: 🇺🇸 USA · 🌏 International: China warehouse — 7–14 day global delivery

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✓ Ships from Domestic Warehouses (🇺🇸) + China (🇨🇳)

$610

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAPharmaceutical-GradeChina Warehouse

What is Supertest 450 (Testosterone Phenylpropionate 73mg + Testosterone Acetate 32mg + Testosterone Decanoate 147mg + Testosterone Propionate 73mg + Testosterone Cypionate 125mg)?

Supertest 450 is a five-ester testosterone preparation at 450mg/mL incorporating Testosterone Acetate 32mg/mL (ultra-fast, ~1–2 days), Testosterone Propionate 73mg/mL (fast, ~3 days), Testosterone Phenylpropionate 73mg/mL (short-medium, ~4–5 days), Testosterone Cypionate 125mg/mL (medium-long, ~8–10 days), and Testosterone Decanoate 147mg/mL (long-acting, ~14–16 days). Five distinct esters provide the broadest possible temporal coverage of testosterone release kinetics in a single injection. Research use only.

Research Applications

Five-Phase Testosterone Pharmacokinetics

Ultra-rapid acetate through long-acting decanoate — full temporal serum testosterone mapping in a single dose

Testosterone Cypionate Contribution

Cypionate ester pharmacokinetics characterisation — medium-long peak, plateau, and half-life within a multi-ester context

Ester Diversity Studies

Most complex multi-ester testosterone formulation — comparative release kinetics across 5 ester chain lengths

HPG Axis Suppression Dynamics

Sustained multi-peak LH/FSH suppression with five-ester temporal testosterone delivery

High-Concentration Volume Research

450mg/mL injection site bioavailability, tolerability, and depot formation studies

Quick Specs

Form	Injectable solution
Concentration	450mg/mL
CAS	57-85-2 / 1255-49-8 / 58-20-8 / 5721-91-5 / 1045-69-8
Molecular Formula	TestPP C₂₈H₃₆O₃ + TestAce C₂₁H₃₀O₃ + TestD C₂₉H₄₄O₃ + TestP C₂₂H₃₂O₃ + TestC C₂₇H₄₀O₃
MW	420.6 / 330.5 / 456.7 / 344.5 / 412.6
Purity	≥99% by HPLC — every batch
Identity	MS confirmed — every batch
COA	Janoshik-independent, publicly verifiable
Vehicle	Pharmaceutical-grade oil (USP/BP)
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.

🌍 Domestic shipping: 🇺🇸 USA · 🌏 International: China warehouse — 7–14 day global delivery