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  • 🇺🇸 USA Domestic
  • Research Compounds
    • Research Peptides
      • Anti-Aging & Longevity Peptides
      • Cognitive & Nootropic Peptides
      • Cosmetics Peptides
      • Performance & Hormone Optimization Peptides
      • Recovery & Healing Peptides
      • Weight Loss & Metabolic Peptides
    • Peptide Blends
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  • QSC
    • About QSC
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FREE standard shipping on all orders.
≥99% Purity Verified • COA on Every Product
Free Shipping on All Orders • FedEx 2Day in USA 🇺🇸
Domestic Warehouses: 🇺🇸 🇪🇺 🇬🇧 🇦🇺 🇨🇦

Testosterone Cypionate 250mg/mL Injectable | 20-Vial Kit

QSC Testosterone Cypionate (Long-acting esterified testosterone) — ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

✓ 99%+ Purity ✓ COA Available
✓ Free Shipping on All Orders ✓ Domestic Warehouses (USA/EU/UK/AU/CA)

$470

or
SKU: QSC-TESTOSTERONE-250MG-ML-20VIAL
Categories: European Union, Injectables, Performance & Hormone Optimization Peptides, Research Peptides, United States
Brand: QSC
Technical Specs & COA
PubMed
Disclaimer & Storage Guide

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SPPS5-Region Domestic Shipping

What is Testosterone Cypionate?

Testosterone Cypionate (Long-acting esterified testosterone (injectable)) is a Testosterone cypionate ester — C₂₇H₄₀O₃, MW 412.6. Esterified testosterone hydrolysed to free testosterone after intramuscular injection (peak ~1–3 days, active ~2 weeks). Free testosterone activates the androgen receptor (AR) producing anabolic effects in muscle, bone, and CNS. Aromatases to oestradiol via CYP19A1 — both AR and ERα/β signalling.

Research Applications

Androgen Receptor Biology

AR binding, nuclear translocation, androgen-responsive gene expression

TRT Research Model

Male hypogonadism, testosterone restoration, androgen deficiency

Muscle Anabolism

Protein synthesis, IGF-1 upregulation, satellite cell activation

Aromatisation Research

CYP19A1 conversion to oestradiol — oestrogenic co-effects

HPG Axis Feedback

Hypothalamic-pituitary-gonadal axis suppression and recovery

Quick Specs

Form Lyophilized powder
Purity ≥99% by HPLC — every batch
Identity MS molecular weight confirmed — every batch
COA Janoshik-independent, publicly verifiable
Manufacture In-house Fmoc SPPS — Qingdao, China
Storage -20°C sealed | 2–8°C reconstituted (2–4 weeks)
Shelf Life 24 months (unopened)

Certificate of Analysis (COA)

QSC COA Report

✓ Verify on Janoshik ↗

🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌍 Domestic shipping: 🇺🇸 USA  ·  🇪🇺 EU  ·  🇬🇧 UK  ·  🇨🇦 Canada  ·  🇦🇺 Australia
🧬 PubMed Research — Cypionate
Search PubMed ↗
259 publications found Last 10 years 3 most recent shown
41604726
Reproductive efficiency of Nelore (Bos indicus) cows submitted to conventional resynchronization or ReBreed21 programs.
Balistrieri M et al. · Theriogenology 2026 View ↗
41538921
Reproductive efficiency of Bos indicus cows under different estradiol-free ovulation synchronization protocols.
Lemos LA et al. · Theriogenology 2026 View ↗
41780265
hCG is not an alternative to eCG in the TAI protocol in Bos indicus cows, but it increases the efficiency of TAI protocols in cows that do not show estrus.
Vicente MP et al. · Anim Reprod Sci 2026 View ↗

Showing 3 of 259 for Cypionate

View all on PubMed ↗

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.

📋

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.
🧪

General Safety & Handling

🚫

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.

🥽

PPE Required

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

🌡️

Storage Compliance

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

🗑️

Proper Disposal

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

🧾

Verify Quality

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

❄️

Peptide Storage Guidelines

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

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