What is Estradiol Cypionate?
Estradiol Cypionate (Long-acting injectable oestrogen research compound) is the cypionate ester of 17β-oestradiol — C₂₆H₃₆O₃, MW 396.6. Esterification provides extended-release oestrogen activity (peak ~3–5 days, active ~2–3 weeks) vs native oestradiol. Activates oestrogen receptors ERα and ERβ — regulates reproductive biology, bone density, cardiovascular function, CNS activity, and metabolic processes. Primary injectable oestrogen reference compound for HRT and oestrogen receptor research.
Research Applications
Oestrogen Receptor Research
ERα and ERβ activation, nuclear signalling, and oestrogen-responsive gene expression
HRT Research Models
Long-acting oestrogen replacement — ovariectomised animal model oestrogen restoration
Bone Density Research
ERα-mediated osteoblast activity and bone mineral density maintenance models
Cardiovascular & Metabolic Research
Oestrogen’s protective cardiovascular effects and lipid profile modulation
CNS Oestrogen Signalling
ERα/β-mediated neuroprotection, neuroplasticity, and mood regulation research
Quick Specs
| Form |
C₂₆H₃₆O₃ |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
313-06-4 |
| 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 |
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
