What is Methenolone Enanthate?
Primobolan Depot (Methenolone Enanthate — long-acting injectable anabolic-androgenic steroid) is the enanthate ester of methenolone — C₂₇H₄₂O₃, MW 414.6. The injectable form of Primobolan provides longer active duration (peak ~3–5 days, active ~10–14 days) vs the oral acetate form. Notably mild androgenic profile with high anabolic-to-androgenic ratio. Does not aromatise to oestrogen. Low progestogenic activity.
Research Applications
Mild-Anabolic Injectable Research
Long-acting methenolone with low androgenic profile — anabolic with minimal androgenic side-effect research
Non-Aromatising Injectable AAS
Anabolic research without oestrogen confounds — injectable alternative to oral Primobolan
Androgen Receptor Binding Studies
Moderate AR affinity — characterised anabolic-to-androgenic binding ratio research
Lean Mass Preservation
Muscle preservation in catabolic models without androgenic or oestrogen co-effects
Depot Pharmacokinetics
Long-acting enanthate depot release kinetics for methenolone
Quick Specs
| Form |
C₂₇H₄₂O₃ |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
303-42-4 |
| 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
