Buy Testosterone Cypionate — Research-Grade from QSC
Testosterone Cypionate is available from QSC Peptides at ≥99% HPLC purity with Janoshik-independent COA documentation. Free domestic shipping from USA, EU, UK, Canada, and Australia warehouses.
Buy Testosterone Cypionate from QSC
≥99% HPLC purity · Janoshik COA · Free domestic shipping · USA, EU, UK, CA, AU warehouses.
Buy Testosterone Cypionate at QSC →What Is Testosterone Cypionate?
Testosterone cypionate is a long-acting esterified form of testosterone featuring a cyclopentylpropionate ester at the 17-beta hydroxyl position. This ester slows absorption from the intramuscular depot, providing sustained androgen release over 7–10 days per injection. Upon hydrolysis of the ester bond, free testosterone binds the androgen receptor (AR) — a nuclear receptor that translocates to the nucleus and modulates gene transcription governing nitrogen retention, protein synthesis, erythropoiesis (red blood cell production), bone mineral density, libido, mood, and secondary male characteristics. Testosterone also undergoes conversion to estradiol via aromatase and to dihydrotestosterone (DHT) via 5-alpha reductase, influencing additional downstream pathways.
Classification
Long-Ester Androgen — Anabolic Foundation
Role in the Clavicular Ascension Stack
Within the 12-compound Clavicular Ascension Stack, Testosterone Cypionate serves as the androgenic-anabolic foundation of the stack — providing the hormonal base that supports strength, lean tissue maintenance, recovery capacity, libido, and overall hormonal milieu during intensive research protocols. Paired with Anavar for enhanced cortisol control and lean tissue preservation.
Specifications
| Property | Value |
|---|---|
| CAS Number | 58-20-8 |
| Molecular Weight | 412.61 |
| Formula | C₂₇H₄₀O₃ |
| Purity | ≥99% HPLC (every batch) |
| COA | Janoshik-independent, publicly verifiable |
| Form | Oil-based injectable, 250mg/ml, 10ml per vial, 10-vial kit |
| Storage | Room temperature, cool and dry |
| Shelf Life | 24 months (unopened) |
Buy Testosterone Cypionate from QSC
≥99% HPLC purity · Janoshik COA · Free domestic shipping · USA, EU, UK, CA, AU warehouses.
Buy Testosterone Cypionate at QSC →Part of the Ascension Stack
Testosterone Cypionate is one of 12 compounds in the Clavicular Ascension Stack — the most comprehensive looksmaxxing research protocol available. The full stack covers 8 biological pathways with Retatrutide, Melanotan II, HGH, IGF-1 LR3, GHK-Cu, NAD+, Testosterone Cypionate, L-Glutathione, BPC-157, TB-500, CJC-1295, and Anavar.
Clavicular Ascension Stack — 12 Compounds
All 12 compounds available from QSC with ≥99% HPLC purity, Janoshik COA, and free domestic shipping from USA, EU, UK, Canada, and Australia.
Get the Ascension Stack at QSC →