Prohormone & Supplement Ingredients:

3b-enanthoxy-19-nor-androst-4-ene-17-one (Decasterone)

With so many different compounds out there, and some many different ways suplpement compnaies write then, and so many fly-by-night companies that don't have the integrity they should, who's to know what's "real" and what's not?

3b-enanthoxy-19-nor-androst-4-ene-17-one is also called Decasterone. While that might sound all scientificee, it's really just a name made up by Redefine Nutrition and filed as a trademark on March 12, 2012.

So what the heck is Decasterone? About the only info I can find comes from Redefine Nutrition itself, which, as far as I'm concerned, is akin to a high schooler grading his own paper. Nevertheless, here's what they say paraphrased and summed up:

"3b-enanthoxy-19-nor-androst-4-ene-17-one" is a new compound that's a two step precursor to 19nortestosteron. This conversion can (notice they say "can" and not "will") easily take place in the body as 3b-enanthoxy-19-nor-androst-4-ene-17-one --> 19norandrostenediol --> 19norTestosterone

This new compound is comprised of lipophilic ester (enanthate ester bond) at the 3-key position to not only to increase the stability of the compound, but also to increase purity.

The problem with other precursors to nandrolone like 19norDHEA, is two fold. During the final stage of the production process of regular 19norDHEA, purity is compromised due to the instability of the compound. Because 19norDHEA is very unstable during the final stage of reaction, some of the material in the reactor will be converted to other isomer and other unknown impurities.

The second issue with regular 19norDHEA is the delivery system. Regular 19norDHEA has a very short half life, which results in poor bioavailability.

Chemists at Redefine Nutrition have overcome both of these issues with this new compound, which maximizes both the purity to 99.9% and the bioavailability of the compound.

Main highlights of 3b-enanthoxy-19-nor-androst-4-ene-17-one mimics the benefits of nandrolone or 19nortestosterone. The term "19nor" means that a methyl group was removed from testosterone at a key position on its molecular backbone. This slight alteration of the chemical structure reduces the DHT related side effects (prostate issues, balding, zits) as well as the estrogenic side effects (gyno, man boobs, chesticles) that testosterone possesses.

So now you might be asking what the heck is 19nor? The 19-nor steroids are a group of compounds that are precursors to nandrolone. The chemical structure of the 19-nors differs from the more familiar and naturally prevalent androstenes and testosterone by the absence of the number 19 carbon atom and its attached hydrogen atoms. The removal of this chemical group results in a much flatter three-dimensional structure. That structural change in turn results in much more favorable binding affinities for skeletal muscle rather than for prostate and other sexual tissues. This is important because a high binding affinity means that a substance is more likely to enter the cell and bring about the desired effects.

Nandrolone (also known as 19-nortestosterone), the substance into which the 19-nors are to some extent converted by the liver, has a binding affinity that is not only high for skeletal muscle, but that is roughly equal for skeletal muscle and sexual tissues such as the prostate. In comparison, testosterone has a binding affinity as much as 50 times greater for sexual tissues (thus its greater "androgenicity") than for muscle. So, nandrolone has anabolic effects (which take place in muscle) but less androgenic effects (which occur in sexual tissues).

While there are still many facts not yet known about the 19-nors, we can tell you straight away that they do not compare in potency to the infamous illegal steroid known as Deca-Durabolin (nandrolone decanoate). The 19-nors may well be partly metabolized to 19-nortestosterone (nandrolone), the steroid base for Deca, but they're a far cry from
Supplements with this ingredient:
Finaflex 550-XD (Prohormones)

Links to additional information on 3b-enanthoxy-19-nor-androst-4-ene-17-one (Decasterone)
19-Nor (Added on 8/22/2012)

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