What is Metribolone (Methyltrienolone)?
Metribolone (Methyltrienolone — ultra-potent non-aromatising synthetic androgen research compound) is methyltrienolone — C₁₉H₂₄O₂, MW 284.4 — at a low-concentration 5mg/mL formulation reflecting its extreme potency. 17α-methyl-trenbolone derivative considered one of the most potent androgens ever synthesised. ~120× greater AR binding affinity than testosterone. Does not aromatise. Used as the gold-standard AR reference ligand in receptor binding assays. Extreme potency necessitates very low concentrations for research use.
Research Applications
Gold-Standard AR Binding Reference
~120× greater AR affinity than testosterone — standard reference for AR competition binding assays
Ultra-Potent Androgen Pharmacology
Ceiling AR agonist for maximum AR activation dose-response curve determination
Non-Aromatising Androgen Model
Potent pure androgenic signalling without any oestrogenic co-effects
Progesterone Receptor Research
High PR binding affinity — progestogenic activity alongside extreme AR potency
Comparative Anabolic-Androgenic Research
Reference standard for relative binding affinity comparisons of other AAS
Quick Specs
| Form | C₁₉H₂₄O₂ |
| Purity | ≥99% by HPLC — every batch |
| CAS Number | 965-93-5 |
| Molecular Weight | MS molecular weight confirmed — every batch |
| Specification | ≥99% by HPLC — every batch |
| Shelf Life | 24 months (unopened) |
| Storage | Room temp sealed | 2–8°C recommended |
| Brand | China |