Trenbolone Acetate (commonly abbreviated as Tren Ace, Tren A, or simply as Tren) is the most popular format of Trenbolone in use by bodybuilders and athletes today. Initially, Trenbolone was officially released for a very brief period onto the human prescription market as Trenbolone Hexahydrobenzylcarbonate under the brand name Parabolan, which was manufactured in France. Parabolan was the first and only form of Trenbolone to be ever manufactured and sold for human use. This was for a very short period during the 1990s, however, and towards the late 1990s it was pulled from the market and Trenbolone itself was officially disapproved for human use. This is therefore a strong indication that Trenbolone might soon see re-entry into the human prescription drug market and re-approval for human use, though it is unknown how long it might be before this happens.
Trenbolone itself is a derivative of Nandrolone, and these two anabolic steroids (Trenbolone and Nandrolone) are classified as 19-nor compounds, meaning they both lack the 19th carbon on their chemical structure (this is what characterizes a 19-nor compound, and this 19th carbon is indeed found on Testosterone and all other anabolic steroids except for those that lack it). Because of this, they are categorized also as Progestins. Although Trenbolone and Nandrolone are distinctly different from Progesterone, they are Progestins and express interaction and activity with the Progesterone receptors in the body. In any case, Trenbolone is further removed from its parent hormone Nandrolone because while the lack of Nandrolone’s 19th carbon is replaced with a hydrogen atom, Trenbolone’s lack of a 19th carbon is replaced with double bonds in order to fill in the void created by the missing 19th carbon. Trenbolone further contains a modification of carbon 11, where a hydrogen atom was removed and the remaining void is once again filled in by double-bonding with its neighbouring carbon atom. What this creates for Trenbolone are three characteristics: the first being a massive increase in the affinity for the androgen receptor, creating a very potent and strong anabolic steroid. The second advantage it creates for Trenbolone is making Trenbolone completely resistant to aromatization into Estrogen. This is a stark difference from Nandrolone, which merely exhibits an increased resistance to aromatization (but it still occurs in smaller amounts). The aromatase enzyme (the enzyme responsible for the conversion of androgens into Estrogen) does not recognise Trenbolone as a proper substrate for chemical reaction. The third characteristic granted to Trenbolone by these modifications is its ability to be highly resistant to metabolism in the body.
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Below is the test results of Trenbolone Acetate:
Yellow Crystalline Powder
Organic Volatile Impurities
Loss On Drying
Residue On Ignition