What is Testosterone Decanoate?
Testosterone Decanoate is the longest-acting testosterone ester (C10 fatty acid) — active duration up to 2–3 weeks. The primary long-acting component of Sustanon blends. Research tool for ultra-long-exposure androgen pharmacokinetics, prolonged HPG suppression studies, and multi-ester formulation research. Research use only.
Research Applications
Ultra-Long Ester PK
Decanoate hydrolysis kinetics, prolonged serum testosterone plateau, depot effects
Sustanon Component Research
Isolated decanoate fraction PK vs complete Sustanon blend studies
Prolonged HPG Suppression
Sustained LH/FSH suppression, recovery timeline after ultra-long ester
Depot Injection Research
IM depot formation, release kinetics, tissue residence time
Comparative Ester Series
Full testosterone ester ladder: propionate→enanthate→cypionate→decanoate
Quick Specs
| Form | Raw bulk powder (crystalline/amorphous) |
| Purity | ≥99% by HPLC — every batch |
| CAS Number | 5721-91-5 |
| Molecular Formula | C₂₉H₄₆O₃, MW 446.7 |
| Identity | MS molecular weight confirmed — every batch |
| Compound Type | Ultra-Long-Ester Testosterone (Decanoate) |
| COA | Janoshik-independent, publicly verifiable |
| Manufacture | In-house synthesis — Qingdao, China |
| Storage | Room temperature sealed | cool, dry storage |
| Shelf Life | 24 months (unopened) |
