What is Masteron Propionate (Drostanolone Propionate)?
Masteron Propionate (Drostanolone Propionate — short-acting DHT-derived AAS (injectable)) is the propionate ester of drostanolone — C₂₃H₃₆O₃, MW 360.5. Short-acting ester (peak ~1–2 days, active ~3 days). DHT-derived 2α-methyl modification provides aromatase inhibitory activity alongside androgenic effects. Does not aromatise. Acts as an anti-oestrogen by competitively inhibiting aromatase enzyme activity and binding to oestrogen receptors as a partial antagonist.
Research Applications
Aromatase Inhibition Research
Drostanolone’s aromatase inhibitory activity — competitive inhibition studies with aromatising compounds
Anti-Oestrogenic AAS Model
Non-aromatising steroid with additional oestrogen-suppressing properties — unique dual mechanism
DHT-Derived Androgen Biology
2α-methyl DHT derivative — AR binding and androgenic signalling research
Short-Acting Depot Pharmacokinetics
Propionate ester rapid onset and clearance kinetics
Lean Mass Research
Hardening effects and oestrogen reduction in anabolic research models
Quick Specs
| Form |
C₂₃H₃₆O₃ |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
521-12-0 |
| Molecular Weight |
MS molecular weight confirmed — every batch |
| Specification |
≥99% by HPLC — every batch |
| Shelf Life |
24 months (unopened) |
| Storage |
Room temp sealed | 2–8°C recommended |
| Brand |
China |
Certificate of Analysis (COA)
Frequently Asked Questions
How do I reconstitute this peptide?
QSC injectable solutions are supplied ready-to-use — no reconstitution required. Each vial contains the stated concentration in pharmaceutical-grade carrier (oil or aqueous). Draw using a sterile syringe appropriate for the solution viscosity.
How should this peptide be stored?
Oil-based solutions: store at room temperature (15–25°C), away from direct sunlight — do not refrigerate as cold temperatures can cause crystallisation. Aqueous solutions: store at 2–8°C. Properly stored, injectable solutions are stable for 2–3 years.
What purity is this QSC compound and how is it verified?
All QSC injectable compounds are ≥99% pure 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 temp sealed | 2–8°C recommended
