Chemical Identity

Boldenone Undecylenate is a synthetic derivative of Testosterone, modified with an Undecylenate ester attached at the 17-beta hydroxyl position. It also contains an additional double bond between C1 and C2, distinguishing it structurally from testosterone.

Molecular Details

Molecular Formula: C₃₀H₄₄O₃

Molecular Weight: Approximately 452.7 g/mol

Structure Type: Testosterone-derived anabolic steroid

Structural Description

The molecule retains the four-ring steroid backbone typical of testosterone, including a ketone group at the C3 position and a double bond between C4 and C5. A key structural difference is the presence of an extra double bond between C1 and C2 in the A-ring, which alters its interaction with enzymes and receptors. The defining feature is the esterification at the 17-beta hydroxyl group, where a long-chain undecylenate ester is attached. This ester significantly increases lipophilicity and allows the compound to remain in oil-based depots for extended periods before gradual release into circulation.

Functional Significance

The undecylenate ester does not enhance anabolic or androgenic activity but functions to prolong the release and half-life of the compound. Due to its long ester chain, Boldenone Undecylenate exhibits a slow release profile with a half-life typically ranging from 10 to 14 days. The additional double bond in its structure contributes to reduced aromatization compared to testosterone, influencing its overall activity profile.

Summary

Boldenone Undecylenate is a long-acting testosterone-derived compound characterized by structural modifications that affect both its stability and release rate. Its extended ester chain supports sustained release, making it suitable for applications requiring prolonged hormonal activity.