What is Drostanolone Enanthate (Masteron E)?
Drostanolone Enanthate (Masteron E) is a long-acting enanthate ester of drostanolone (2α-methyl-DHT). Non-aromatising AAS with high SHBG-binding affinity and anti-estrogenic properties. Studied for SHBG displacement, direct estrogen receptor competition, and free androgen availability. Research use only.
Research Applications
Long-Ester Drostanolone PK
Masteron E vs Propionate — enanthate ester sustained release comparison
SHBG Displacement
High SHBG affinity — free androgen calculation, bioavailability research
Anti-Estrogenic Mechanism
Direct ER competition, aromatase-independent anti-estrogenicity
Non-Aromatising AAS Research
DHT-derived pure androgenic activity without E2 contribution
Comparative Ester Research
Drostanolone propionate vs enanthate — ester effect on PK and receptor exposure
Quick Specs
| Form |
C₂₇H₄₄O₃, MW 432.6 |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
472-61-145 |
| Molecular Weight |
MS molecular weight confirmed — every batch |
| Specification |
≥99% by HPLC — every batch |
| Shelf Life |
24 months (unopened) |
| Storage |
Room temperature sealed | cool, dry storage |
| Manufacture |
In-house synthesis — Qingdao, China |
| Brand |
China |
Certificate of Analysis (COA)
Frequently Asked Questions
How do I reconstitute this peptide?
QSC raw powder compounds are supplied as bulk crystalline or amorphous powder in a sealed, labelled container at the stated quantity. No reconstitution is required — the powder is ready for weighing and use in research applications.
How should this peptide be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct light. Keep in the original sealed container. Properly stored raw powder remains stable for 2–3 years.
What purity is this QSC compound and how is it verified?
All QSC raw powder 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 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 temperature sealed | cool, dry storage
