Injectable Steroid

Testosterone Cypionate

CAS 58-20-8
Formula C₂₇H₄₀O₃
Half-life 8 days (IM)
Detection 3 months

Chemical Identity

CAS Number	`58-20-8`
IUPAC Name	[(8R,9S,10R,13S,14S,17S)-10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl] 3-cyclopentylpropanoate
Molecular Formula	C₂₇H₄₀O₃
Molecular Weight	412.61 g/mol
SMILES	`O=C(CC[C@@H]1CCCC1)O[C@@H]2CC[C@@H]3[C@H]4CCC5=CC(=O)CC[C@]5(C)[C@@H]4CC[C@]23C`
InChIKey	`FMGSKLZLMKYGDP-USOAJAOKSA-N`
Melting Point	98-104 °C
Solubility	Insoluble in water; soluble in oils
Half-life	8 days (IM)

Pharmacological Profile

Anabolic Rating	100
Androgenic Rating	100
Aromatisation	Moderate
Hepatotoxicity	None
Detection Window	3 months

Known trade names

Depo-Testosterone
Cypionax

External references

PubChem CID 6013
PubMed clinical literature
Wikipedia overview

Data sourced from peer-reviewed pharmacological literature and authoritative chemical databases (PubChem, DrugBank, ChEBI). Provided for identification and research reference only — not medical advice.