What is Testosterone Cypionate 50mg/mL?
Testosterone Cypionate 50mg/mL (Low-dose long-acting esterified testosterone (injectable)) is the cypionate ester of testosterone — C₂₇H₄₀O₃, MW 412.6. The 50mg/mL low-concentration format provides precise, lower-dose testosterone delivery for physiological replacement range research protocols. Peak ~1–3 days, active ~2 weeks. Free testosterone activates the androgen receptor (AR). Aromatases to oestradiol via CYP19A1.
Research Applications
Low-Dose Androgen Research
Physiological testosterone range protocols — dose-response and receptor saturation studies
TRT Research Model
Testosterone restoration at sub-pharmacological concentrations
Androgen Receptor Biology
AR binding and signalling at physiological testosterone levels
Aromatisation Research
CYP19A1 oestradiol conversion at low testosterone concentrations
HPG Axis Feedback
Dose-dependent HPG axis suppression at physiological vs pharmacological levels
Quick Specs
| Form |
C₂₇H₄₀O₃ |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
58-20-8 |
| 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 Testosterone esters are supplied as ready-to-use oil-based injectable solutions — no reconstitution required. Each vial contains the stated concentration in pharmaceutical-grade carrier oil. Warm the vial briefly in your hand before drawing.
How should this peptide be stored?
Store at room temperature (15–25°C), away from direct sunlight. Oil-based testosterone solutions are stable for 2–3 years properly stored. Do not refrigerate as this can cause crystallisation of the ester in the oil.
What purity is this QSC compound and how is it verified?
QSC Testosterone injectable solutions are ≥99% HPLC pure with MS-confirmed identity on every batch. 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
