Masteron Propionate (Drostanolone Propionate) 100mg/mL Injectable | 10-Vial Kit

Masteron Propionate (Drostanolone Propionate) 100mg/mL Injectable | 10-Vial Kit — DHT-derived AAS (drostanolone) — non-aromatising potent AR agonist with aromatase inhibitory activity studied for anti-oestrogenic androgen pharmacology and comparative ester pharmacokinetics. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

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$480

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SKU: QSC-MASTERON-P-100MG-ML-10VIAL
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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)

Certificate of Analysis (COA)

Frequently Asked Questions

How is this injectable compound supplied?
This QSC injectable is supplied as a ready-to-use solution — no reconstitution required. The stated concentration is in pharmaceutical-grade carrier (oil or aqueous, as indicated). Draw using a sterile syringe appropriate for the solution type.
How should this injectable compound be stored?
Store at room temperature (15–25°C) for oil-based solutions, or 2–8°C for aqueous solutions, away from direct sunlight. Do not freeze oil-based injectables. Properly stored, injectable solutions remain stable for 2–3 years.
What purity is this QSC compound and how is it verified?
All QSC 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

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.

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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.
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General Safety & Handling

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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.

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PPE Required

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

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Storage Compliance

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

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Proper Disposal

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

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Verify Quality

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

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Peptide Storage Guidelines

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

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