Metribolone (Methyltrienolone) 5mg/mL Injectable | 10-Vial Kit
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Metribolone (Methyltrienolone) 5mg/mL — ultra-potent non-aromatising AR reference ligand (Kd ~0.1 nM); used as competitive binding standard for androgen receptor assay validation and AR pharmacology characterisation research. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.
* The information on this page is a summary and is not intended to cover all available information about this medication. It does not cover all possible uses, directions, precautions, drug interactions or adverse effects and is not a substitute for the expertise and judgement of your healthcare professional.
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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 | Oil-based injectable solution |
| Concentration | 5mg/mL |
| CAS | 965-93-5 |
| Molecular Formula | C₁₉H₂₄O₂ |
| MW | 284.4 Da |
| Purity | ≥99% by HPLC — every batch |
| Identity | MS molecular weight confirmed — every batch |
| COA | Janoshik-independent, publicly verifiable |
| Vehicle | Pharmaceutical-grade carrier oil + benzyl alcohol/benzoate |
| Aromatisation | None — does not aromatise |
| Storage | Room temp sealed | 2–8°C recommended |
| Shelf Life | 24 months (unopened) |
Certificate of Analysis (COA)
Frequently Asked Questions
Frequently asked questions
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