Masteron Enanthate 200mg/mL | 10-Vial Kit

Masteron Enanthate (Drostanolone Enanthate) 200mg/mL Injectable | 10-Vial Kit

Masteron Enanthate (Drostanolone Enanthate) 200mg/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. Research use only.

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

$680

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SynthesisChina Warehouse

What is Masteron Enanthate (Drostanolone Enanthate)?

Masteron Enanthate (Drostanolone Enanthate — long-acting DHT-derived AAS (injectable)) is the enanthate ester of drostanolone — C₂₉H₄₆O₃, MW 446.7. Longer-acting ester than propionate (peak ~3–4 days, active ~10–14 days) allowing less frequent administration. DHT-derived with 2α-methyl modification providing aromatase inhibitory activity. Does not aromatise to oestrogen. Partial oestrogen receptor antagonism alongside androgenic activity.

Research Applications

Long-Acting Aromatase Inhibitor AAS

Extended-release drostanolone — aromatase inhibition sustained over 2 weeks

Anti-Oestrogenic Anabolic Model

Non-aromatising steroid with oestrogen-suppressing properties — fewer injections vs propionate

DHT-Derived Androgen Biology

2α-methyl DHT derivative — AR binding and androgenic signalling research

Mast P vs Mast E Comparison

Short-acting propionate vs long-acting enanthate ester pharmacokinetic comparison

Lean Mass & Oestrogen Control Research

Combined anabolic and anti-oestrogen activity in research models

Quick Specs

Form	Oil-based injectable solution
Concentration	200mg/mL
CAS	472-61-145
Molecular Formula	C₂₉H₄₆O₃
MW	446.7 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)

✓ Verify on Janoshik ↗

Frequently Asked Questions

How is this QSC injectable supplied?

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 QSC injectable 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 injectable 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.

🌏 Shipping: China warehouse — 7–14 day global delivery