Testosterone phenylbutyrate

Testosterone phenylbutyrate, also known as testosterone phenylbutanoate, testosterone 17β-phenylbutyrate, and androst-4-en-17β-ol-3-one 17β-phenylbutyrate, is a synthetic, injected anabolic-androgenic steroid (AAS) and an androgen ester – specifically, the C17β phenylbutyrate (phenylbutanoate) ester of testosterone – which was never marketed.[1] It is a prodrug of testosterone and, when administered via intramuscular injection, is associated with a long-lasting depot effect and extended duration of action.

Testosterone phenylbutyrate

Clinical data
Other names	Testosterone phenylbutanoate; Testosterone 17β-phenylbutanoate; Androst-4-en-17β-ol-3-one 17β-phenylbutyrate
Routes of administration	Intramuscular injection
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 4-phenylbutanoate
ChemSpider	58539760
Chemical and physical data
Formula	C29H38O3
Molar mass	434.620 g·mol−1
3D model (JSmol)	Interactive image
SMILES C[C@]12CC[C@H]3[C@@H](CCC4=CC(=O)CC[C@]34C)[C@@H]1CC[C@@H]2OC(=O)CCCC1=CC=CC=C1
InChI InChI=1S/C29H38O3/c1-28-17-15-22(30)19-21(28)11-12-23-24-13-14-26(29(24,2)18-16-25(23)28)32-27(31)10-6-9-20-7-4-3-5-8-20/h3-5,7-8,19,23-26H,6,9-18H2,1-2H3/t23-,24-,25-,26-,28-,29-/m0/s1 Key:KPKRHHWUOMEERQ-MPZZESAYSA-N