Testosterone Propionate 100mg/mL Injectable | 20-Vial Kit

🇺🇸 1-Region Domestic Shipping
Testosterone Propionate 100mg/mL — short-acting esterified testosterone, 20-vial kit. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

🌍 Domestic shipping: 🇺🇸 USA 5–7 days
🌏 International shipping: 7–14 days

* The information on this page is a summary and is not intended to cover all available information about this medication. It does not cover all possible uses, directions, precautions, drug interactions or adverse effects and is not a substitute for the expertise and judgement of your healthcare professional.

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What is Testosterone Propionate?

Testosterone Propionate (Short-acting esterified testosterone (injectable)) is a testosterone propionate ester — C₂₂H₃₂O₃, MW 344.5. Shortest-chain testosterone ester providing rapid onset (peak ~24–36h, active ~2–3 days). Requires more frequent administration than longer esters. Free testosterone activates the androgen receptor (AR). Aromatases to oestradiol via CYP19A1.

Research Applications

Short-Acting Androgen Models

Rapid-onset testosterone delivery for acute AR activation studies

Androgen Receptor Biology

AR binding, nuclear translocation, androgen-responsive gene expression

Pharmacokinetic Research

Short half-life enables precise peak-and-trough testosterone studies

Aromatisation Research

CYP19A1 conversion to oestradiol — oestrogenic co-effects

HPG Axis Research

Rapid suppression/recovery kinetics of the hypothalamic-pituitary-gonadal axis

Quick Specs

Form Oil-based injectable solution
Concentration 100mg/mL
CAS 57-85-2
Molecular Formula C₂₂H₃₂O₃
MW 344.5 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
Storage Room temp sealed | 2–8°C recommended
Shelf Life 24 months (unopened)

Certificate of Analysis (COA)

Frequently Asked Questions

How is QSC Testosterone supplied?
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 injectable Testosterone 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 QSC Testosterone 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

Frequently asked questions

How does my subscription work?

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