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  • 🇺🇸 USA Domestic
  • Warehouses
    • 🇪🇺 EU Domestic
    • 🇬🇧 UK Domestic
    • 🇦🇺 AU Domestic
    • 🇨🇦 CA Domestic
    • 🇨🇳 CH International
  • Compounds
    • Categories
      • Anti-Aging & Longevity
      • Cognitive & Nootropic
      • Cosmetics
      • Performance & Hormone Optimization
      • Recovery & Healing
      • Weight Loss & Metabolic
    • Peptides
      • Peptide Blends
    • Tablets
    • Injectables
    • Raws
  • Track Order
  • Contact
    • About QSC
      • QSC Price List
      • QSC Reviews
      • QSC FAQ
      • Privacy Policy
      • Return, Refund & Shipping Policy
      • Terms and Conditions
Login / Register
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FREE standard shipping on all orders.
≥99% Purity Verified • COA on Every Product
Free Shipping on All Orders • USPS/FedEx in USA 🇺🇸
Domestic Warehouses: 🇺🇸 🇪🇺 🇬🇧 🇨🇦 🇦🇺 🇸🇬 🇹🇭 🇻🇳

Testosterone Isocaproate 100G Raw Powder | Medium-Ester Test

QSC Testosterone Isocaproate (Medium-Ester Testosterone (Isocaproate)) — ≥99% HPLC purity, MS confirmed, Janoshik COA. 100G bulk. Research use only.

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

$600

or
SKU: QSC-034-TESTISOCAPROATE-100G-RAWPOWDER
Categories: Performance & Hormone Optimization, Raws
Brand: QSC
Technical Specs & COA

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SynthesisChina Warehouse

What is Testosterone Isocaproate?

Testosterone Isocaproate is a branched-chain medium-duration ester (~7–9 days). Third component of Sustanon blends. The isocaproate (4-methylpentanoate) ester provides intermediate release kinetics between phenylpropionate and decanoate. Research use only.

Research Applications

Sustanon Component Research

Isolated isocaproate contribution to multi-ester blend serum testosterone profile

Medium-Duration Ester PK

Isocaproate hydrolysis kinetics, depot residence, 7–9 day active window

Branched Ester Pharmacology

Branched vs linear ester effect on esterase substrate affinity and hydrolysis rate

Multi-Ester Formulation

Isocaproate as bridge component between fast and ultra-long esters in blends

Comparative Ester Series

TestPP vs TestIC vs TestD — progressive ester chain length effects on PK

Quick Specs

Form Raw bulk powder (crystalline/amorphous)
Purity ≥99% by HPLC — every batch
CAS Number 15262-86-9
Molecular Formula C₂₅H₃₈O₃, MW 390.6
Identity MS molecular weight confirmed — every batch
Compound Type Medium-Ester Testosterone (Isocaproate)
COA Janoshik-independent, publicly verifiable
Manufacture In-house synthesis — Qingdao, China
Storage Room temperature sealed | cool, dry storage
Shelf Life 24 months (unopened)

Certificate of Analysis (COA)

QSC COA Report

✓ Verify on Janoshik ↗

Frequently Asked Questions

How is this raw powder supplied?
QSC raw powder compounds are supplied as bulk crystalline or amorphous powder in a sealed, labelled container at the stated quantity. No reconstitution is required — the powder is ready for weighing and use in research applications.
How should this raw powder be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct light. Keep in the original sealed container. Properly stored raw powder remains stable for 2–3 years.
What purity is this QSC raw powder and how is it verified?
All QSC raw powder 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
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