Trenbolone enanthate
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| Other names | Trenabol; Trenbolone heptanoate; 19-Nor-δ9,11-testosterone 17β-enanthate; Estra-4,9,11-trien-17β-ol-3-one 17β-enanthate | 
| Routes of administration | Intramuscular injection | 
| Drug class | Androgen; Anabolic steroid; Androgen ester; Progestogen | 
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| Formula | C25H34O3 | 
| Molar mass | 382.544 g·mol−1 | 
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Trenbolone enanthate, known by the nickname Trenabol, is a synthetic and injected anabolic–androgenic steroid (AAS) and a derivative of nandrolone which was never marketed. It is the C17β enanthate ester and a long-acting prodrug of trenbolone. Trenbolone enanthate was never approved for medical or veterinary use but is used in scientific research and has been sold on the internet black market as a designer steroid for bodybuilders and athletes.