QSC RESEARCH GRADE
≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House Synthesis1-Region Domestic Shipping
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 | Oil-based injectable solution |
| Concentration | 100mg/mL |
| CAS | 521-12-0 |
| Molecular Formula | C₂₃H₃₆O₃ |
| MW | 360.5 Da |
| Purity | ≥99% by HPLC — every batch |
| Identity | MS molecular weight confirmed — every batch |
| COA | Janoshik-independent, publicly verifiable |
| Vehicle | Pharmaceutical-grade carrier oil + benzyl alcohol/benzoate |
| Aromatisation | None — inhibits aromatase |
| Storage | Room temp sealed | 2–8°C recommended |
| Shelf Life | 24 months (unopened) |
