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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
    • Orals
    • Oils
    • Raws
  • Track Order
  • Contact
    • About QSC
    • Certificate of Analysis
    • Price List
    • FAQ
    • Privacy Policy
    • Return, Refund & Shipping Policy
    • Terms and Conditions
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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: 🇺🇸 🇪🇺 🇬🇧 🇨🇦 🇦🇺 🇸🇬 🇹🇭 🇻🇳

Proviron 25mg Tablets | 100-Count | Mesterolone

QSC Proviron (Mesterolone (DHT oral androgen — non-17α-alkylated)) — ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

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

$200

or
SKU: QSC-P25-PROVIRON-25MG-100TAB
Categories: China, Orals, Performance & Hormone Optimization, Steroids
Brand: QSC
Technical Specs & COA

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SPPSChina Warehouse

What is Proviron?

Mesterolone (Proviron) is a 1α-methyl DHT oral androgen — NOT 17α-alkylated, therefore significantly lower hepatotoxicity than most oral AAS. Does not aromatise, partial AR agonist, high SHBG binding affinity. Research: male fertility, SHBG biology, anti-oestrogenic mechanisms, and comparative non-alkylated oral AAS liver safety. CAS 1424-00-6.

Research Applications

SHBG Displacement

High SHBG affinity — displaces testosterone and other steroids

Anti-Oestrogenic

Competitive inhibition at aromatase — reduces estrogen synthesis

Male Fertility Research

Spermatogenesis support — Sertoli cell androgen environment

Non-17α-Alkylated Safety

Lower hepatotoxicity — comparative liver safety reference

AR Partial Agonism

Partial agonist at AR — receptor pharmacology studies

Quick Specs

Form Tablet — 20mg per tablet, 100-tablet bottle
CAS Number 1424-00-6
Molecular Formula C₂₀H₃₂O₂
Molecular Weight 304.5 g/mol
Compound Type Oral Anabolic Steroid
Purity ≥99% by HPLC — every batch
Identity MS molecular weight confirmed — every batch
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 are QSC research tablets supplied?
QSC research tablets are supplied as pre-dosed oral tablets at the stated concentration. No reconstitution is required. Each tablet is compressed at uniform dose for consistent dosing in research applications.
How should research tablets be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct sunlight. Keep in the original container. Properly stored tablets remain stable for 2–3 years.
What purity are QSC research tablets and how is it verified?
QSC research tablets contain active ingredient at ≥99% HPLC purity before tableting, with MS-confirmed identity on every batch. 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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