Sustanon 400 (Testosterone Propionate 48mg + Testosterone Phenylpropionate 96mg + Testosterone Isocaproate 96mg + Testosterone Decanoate 160mg) 400mg/mL Injectable | 20-Vial Kit

Sustanon 400mg/mL — quad-ester testosterone blend (high-concentration 400mg/ml) research injectable, 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 (🇨🇳)

$570

or
SKU: QSC-S400-SUSTANON-400MG-ML-20VIAL
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QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAPharmaceutical-GradeChina Warehouse

What is Sustanon 400 (Testosterone Propionate 48mg + Testosterone Phenylpropionate 96mg + Testosterone Isocaproate 96mg + Testosterone Decanoate 160mg)?

Sustanon 400 is a high-concentration quad-ester testosterone preparation at 400mg/mL — a 60% increase over the original Sustanon 250 formula. Maintains the same four-ester ratio (propionate/phenylpropionate/isocaproate/decanoate) in proportional scaling. Provides equivalent multi-phase release kinetics at higher concentration, enabling higher testosterone delivery per injection volume. Research use only.

Research Applications

High-Concentration Testosterone PK

400mg/mL vs 250mg/mL — dose-volume normalised serum AUC comparison

Multi-Phase Androgen Kinetics

Four-ester serum profiling at increased total concentration

HPG Axis Suppression

Dose-dependent LH/FSH suppression, GnRH pulsatility, spermatogenesis inhibition

Volume-Dose Tolerability

Injection site bioavailability, tissue depot characteristics at 400mg/mL

Sustained Androgen Research

Long-duration testosterone exposure modelling via decanoate-dominant formulation

Quick Specs

Form Injectable solution
Concentration 400mg/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)
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 injectable compound supplied?
This QSC injectable is supplied as a ready-to-use solution — no reconstitution required. The stated concentration is in pharmaceutical-grade carrier (oil or aqueous, as indicated). Draw using a sterile syringe appropriate for the solution type.
How should this injectable compound be stored?
Store at room temperature (15–25°C) for oil-based solutions, or 2–8°C for aqueous solutions, away from direct sunlight. Do not freeze oil-based injectables. Properly stored, injectable solutions remain stable for 2–3 years.
What purity is this QSC compound and how is it verified?
All QSC compounds are tested to ≥99% purity 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

Source: PubMed / NCBI  ·  Last 10 years  ·  Refreshed every 24 hours  ·  For research reference only — not clinical guidance.

⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION

QSC products are strictly for in vitro and in vivo laboratory research. Not intended for diagnostic, therapeutic, or personal use.

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Research Use Disclaimer

All QSC products are strictly for laboratory, scientific, and research use only. They are not for human consumption, medical treatment, diagnosis, or disease prevention.

By purchasing or using QSC products, you confirm:

  • You are a qualified researcher or acting under the supervision of one.
  • Products will only be used for legitimate research purposes.
  • Products are not evaluated by the FDA or any regulatory authority for human use.
  • You assume all responsibility for legal compliance, proper handling, and storage.
  • You meet the legal age requirement in your jurisdiction.
No Warranty: Products are sold “as is,” with no express or implied warranties regarding efficacy, safety, or suitability. Results in research may vary. QSC is not responsible for outcomes, interpretations, or conclusions drawn from any studies conducted using these products.
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General Safety & Handling

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Not for Human Use

These compounds are for research only. Any off-label, personal, or clinical use is strictly outside the intended scope of supply.

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PPE Required

Always use appropriate personal protective equipment (gloves, lab coat, eye protection) when handling peptides.

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Storage Compliance

Follow product-specific storage conditions to maintain identity, purity, and biological activity.

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Proper Disposal

Dispose of all materials in accordance with institutional biosafety, chemical waste, and hazardous material protocols.

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Verify Quality

Janoshik COAs are available on every product page. Verify batch identity (MS confirmed) and purity (≥99% HPLC) before use.

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Peptide Storage Guidelines

🌑 Light-protected💧 Low moisture🌡️ Stable temperature🔬 Sterile handling

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