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Testosterone caproate
Clinical data
Trade names	Omnadren 250
Other names	TCa; Testosterone hexanoate; 17β-Hydroxyandrost-4-en-3-one hexanoate; 3-Oxoandrost-4-en-17β-yl hexanoate
Routes of; administration	Intramuscular injection
Identifiers
	IUPAC name [(8R,9S,10R,13S,14S,17S)-10,13-dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl] hexanoate;
CAS Number	10312-45-5;
PubChem CID	112100;
ChemSpider	100500;
UNII	7CC0L7J83H;
CompTox Dashboard (EPA)	DTXSID10908205 ;
ECHA InfoCard	100.030.615
Chemical and physical data
Formula	C25H38O3
Molar mass	386.576 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CCCCCC(=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/C25H38O3/c1-4-5-6-7-23(27)28-22-11-10-20-19-9-8-17-16-18(26)12-14-24(17,2)21(19)13-15-25(20,22)3/h16,19-22H,4-15H2,1-3H3/t19-,20-,21-,22-,24-,25-/m0/s1; Key:WIGTZVOQGIFMAV-BKWLFHPQSA-N;

Testosterone caproate (TCa), also known as testosterone hexanoate, is an androgen and anabolic steroid and a testosterone ester that is no longer marketed.^[1]^[2]^[3] It was formerly available as a component of Omnadren 250, along with testosterone isocaproate, testosterone phenylpropionate, and testosterone propionate, but this formulation has since been discontinued.^[4]

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Parenteral durations of androgens/anabolic steroids
Medication	Form	Major brand names	Duration
Testosterone	Aqueous suspension	Andronaq, Sterotate, Virosterone	2–3 days
Testosterone propionate	Oil solution	Androteston, Perandren, Testoviron	3–4 days
Testosterone phenylpropionate	Oil solution	Testolent	8 days
Testosterone isobutyrate	Aqueous suspension	Agovirin Depot, Perandren M	14 days
Mixed testosterone esters^a	Oil solution	Triolandren	10–20 days
Mixed testosterone esters^b	Oil solution	Testosid Depot	14–20 days
Testosterone enanthate	Oil solution	Delatestryl	14–28 days
Testosterone cypionate	Oil solution	Depovirin	14–28 days
Mixed testosterone esters^c	Oil solution	Sustanon 250	28 days
Testosterone undecanoate	Oil solution	Aveed, Nebido	100 days
Testosterone buciclate^d	Aqueous suspension	20 Aet-1, CDB-1781^e	90–120 days
Nandrolone phenylpropionate	Oil solution	Durabolin	10 days
Nandrolone decanoate	Oil solution	Deca Durabolin	21–28 days
Methandriol	Aqueous suspension	Notandron, Protandren	8 days
Methandriol bisenanthoyl acetate	Oil solution	Notandron Depot	16 days
Metenolone acetate	Oil solution	Primobolan	3 days
Metenolone enanthate	Oil solution	Primobolan Depot	14 days
Note: All are via i.m. injection. Footnotes: ^a = TP, TV, and TUe. ^b = TP and TKL. ^c = TP, TPP, TiCa, and TD. ^d = Studied but never marketed. ^e = Developmental code names. Sources: See template.