Cloxotestosterone acetate

Cloxotestosterone acetate (INN; brand name Caprosem), also known as testosterone 17β-chloral hemiacetal O-acetate, is a synthetic, injected anabolic–androgenic steroid (AAS) and an androgen ether and ester – specifically, the O-acetate ester of cloxotestosterone, the 17β-trichloro hemiacetal ether of testosterone.[1] It is administered via intramuscular injection as a 100 mg, 2 mL aqueous suspension and lasts 4 to 6 weeks with a single administration.[2] The drug was first marketed in the early 1960s.[2]

Cloxotestosterone acetate

Clinical data
Trade names	Caprosem
Other names	Testosterone 17β-chloral hemiacetal O-acetate; 17β-(1-(Acetyloxy)-2,2,2-trichloroethoxy)androst-4-en-3-one
Routes of administration	Intramuscular injection
Identifiers
IUPAC name [2,2,2-trichloro-1-[[(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]oxy]ethyl] acetate
CAS Number	13867-82-8
PubChem CID	20056698
ChemSpider	16739648
UNII	2X9YIP66ZO
Chemical and physical data
Formula	C23H31Cl3O4
Molar mass	477.847 g/mol g·mol−1
3D model (JSmol)	Interactive image
SMILES CC(=O)OC(C(Cl)(Cl)Cl)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/C23H31Cl3O4/c1-13(27)29-20(23(24,25)26)30-19-7-6-17-16-5-4-14-12-15(28)8-10-21(14,2)18(16)9-11-22(17,19)3/h12,16-20H,4-11H2,1-3H3/t16-,17-,18-,19-,20?,21-,22-/m0/s1 Key:SJWGVEPLFJGWNB-UWSXKFMVSA-N