Testosterone enanthate

Testosterone enanthate
Clinical data

Routes of administration	Intramuscular injection
Pharmacokinetic data
Biological half-life	4.5 days (intramuscular)
Identifiers
IUPAC name (1S,2R,10R,11S,14S,15S)-2,15-dimethyl-5-oxotetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-6-en-14-yl heptanoate
Synonyms	NSC-17591
CAS Number	315-37-7
PubChem CID	9416
ChemSpider	9045
UNII	7Z6522T8N9
KEGG	D00958
ChEBI	CHEBI:9464
ChEMBL	CHEMBL1200335
Chemical and physical data
Formula	C₂₆H₄₀O₃
Molar mass	400.60 g·mol⁻¹
3D model (Jmol)	Interactive image
SMILES CCCCCCC(=O)O[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4=CC(=O)CC[C@]34C)C
InChI InChI=1S/C26H40O3/c1-4-5-6-7-8-24(28)29-23-12-11-21-20-10-9-18-17-19(27)13-15-25(18,2)22(20)14-16-26(21,23)3/h17,20-23H,4-16H2,1-3H3/t20-,21-,22-,23-,25-,26-/m0/s1 Key:VOCBWIIFXDYGNZ-IXKNJLPQSA-N

Testosterone enanthate (USAN, BAN) (brand names Delatestryl, Testostroval, Testro LA, Andro LA, Durathate, Everone, Testrin, Andropository), or testosterone heptanoate, is an androgen and anabolic steroid and a testosterone ester. Along with testosterone cypionate and testosterone propionate, it is one of the most widely used testosterone esters. Testosterone enanthate was first introduced in 1952. Administered via intramuscular injection, it is the most widely used form of testosterone in androgen replacement therapy.

Testosterone enanthate has an elimination half-life of 4.5 days and a mean residence time of 8.5 days when used as a depot intramuscular injection. It requires frequent administration of approximately once per week, and large fluctuations in testosterone levels result with it, with levels initially being elevated and supraphysiological.

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