Chemical Identity

Drostanolone Propionate is a synthetic derivative of Dihydrotestosterone, modified with a Propionate ester attached at the 17-beta hydroxyl position. It also features a 2-alpha methyl group, which contributes to its resistance to metabolic breakdown.

Molecular Details

Molecular Formula: C₂₃H₃₆O₃

Molecular Weight: Approximately 360.5 g/mol

Structure Type: DHT-derived anabolic steroid

Structural Description

The molecule is based on the dihydrotestosterone backbone, meaning it lacks the double bond between C4 and C5 found in testosterone. It contains a ketone group at the C3 position and a fully saturated A-ring. A defining structural modification is the addition of a methyl group at the 2-alpha position, which enhances stability and influences its anabolic-to-androgenic ratio. The 17-beta hydroxyl group is esterified with a short-chain propionate ester, resulting in relatively low lipophilicity compared to longer esters.

Functional Significance

The propionate ester does not alter the intrinsic anabolic or androgenic activity of drostanolone but controls its release rate and duration of action. Due to the short ester chain, Drostanolone Propionate has a relatively short half-life of approximately two to three days, leading to a faster onset of action and requiring more frequent administration to maintain stable levels. As a DHT-derived compound, it does not aromatize into estrogen.

Summary

Drostanolone Propionate is a short-acting DHT-derived compound characterized by structural modifications that enhance stability and control release. Its propionate ester allows for faster absorption and clearance, while maintaining the core biological properties of the parent hormone.