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Testosterone cypionate

Cat. No. M3502
Testosterone cypionate Structure
Size Price Availability Quantity
Free Sample (0.5-1 mg)  USD 0 In stock
10mg USD 25  USD25 In stock
50mg USD 55  USD55 In stock
100mg USD 80  USD80 In stock
500mg USD 150  USD150 In stock
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Quality Control & Documentation
Biological Activity

Testosterone cypionate is the oil-soluble 17 (beta)-cyclopentylpropionate ester of the androgenic hormone testosterone. Approximately 7% of testosterone is reduced to 5α-dihydrotestosterone (DHT) by the cytochrome P450 enzyme 5α-reductase, an enzyme highly expressed in male accessory sex organs and hair follicles. Approximately 0.3% of testosterone is converted into estradiol by aromatase (CYP19A1) an enzyme expressed in the brain, liver, and adipose tissues.

Product Citations
Chemical Information
Molecular Weight 412.6
Formula C27H40O3
CAS Number 58-20-8
Solubility (25°C) DMSO 60 mg/mL
Storage Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.


[1] Edward J Choi, et al. Comparison of Outcomes for Hypogonadal Men Treated with Intramuscular Testosterone Cypionate versus Subcutaneous Testosterone Enanthate

[2] Jordan C Best, et al. A cross-sectional comparison of secondary polycythemia in testosterone-deficient men treated with nasal testosterone gel vs. intramuscular testosterone cypionate

[3] No authors listed. Testosterone

[4] Nasimeh Yazdani, et al. Daily subcutaneous testosterone for management of testosterone deficiency

[5] Michael M Pan, et al. Beyond testosterone cypionate: evidence behind the use of nandrolone in male health and wellness

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