What is Mesterolone (Proviron)?
Mesterolone (Proviron) is a 1α-methyl derivative of dihydrotestosterone (DHT). Weak AR agonist with high SHBG-binding affinity — primarily studied for free androgen availability, SHBG displacement, and as an anti-estrogenic androgenic reference compound. Does not aromatise. Research use only.
Research Applications
SHBG Binding & Displacement
High-affinity SHBG competitor — free testosterone availability models
AR Pharmacology
Weak partial agonist activity, tissue-selective androgenic profiling
Anti-Estrogenic Research
Aromatase-independent estrogen suppression via androgen competition
Androgen Metabolism
1α-methyl DHT metabolism, 5α-reductase substrate studies
Male Fertility Research
LH-independent androgen supplementation, spermatogenesis support models
Quick Specs
| Form |
C₂₀H₃₂O₂, MW 304.5 |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
1424-00-6 |
| Molecular Weight |
MS molecular weight confirmed — every batch |
| Specification |
≥99% by HPLC — every batch |
| Shelf Life |
24 months (unopened) |
| Storage |
Room temperature sealed | cool, dry storage |
| Manufacture |
In-house synthesis — Qingdao, China |
| Brand |
China |
Certificate of Analysis (COA)
Frequently Asked Questions
How do I reconstitute this peptide?
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 peptide 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 compound 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.
🌍 Domestic shipping: 🇺🇸 USA 5–7 days
🌏 International shipping: 7–14 days
⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION
QSC products are strictly for in vitro and in vivo laboratory research.
Safety & Handling
🚫
Not for Human Use
These compounds are for research only.
🥽
PPE Required
Always use appropriate protective equipment.
❄️
Storage Compliance
Follow product-specific storage conditions.
Product-Specific Storage
Room temperature sealed | cool, dry storage
