Testosterone undecanoate
Chemical Name: 4-Androsten-17beta-ol-3-one undecanoate
CAS NO.: 5949-44-0
Molecular Formula: C30H48O3
Molecular weight: 456.70
Assay: 97.0%~103.0%
Standard: CP2000

Chemical Properties: White Solid
usage: A metabolite of Testosterone (T155000). It is a promising androgen for male hormonal contraception.

Description:
Andriol is a unique oral testosterone product, developed by the international drug firm Organon. One of the more recently developed anabolic steroids, Andriol first became available in the early 1980′s.

One might also pay interest to the "mildness" of this compound as described by other bodybuilding materials. Andriol is often spoken about as some type of magic product, which to spite being a form of regular testosterone somehow allows for only minimal estrogen conversion.

Testosterone undecanoate or testosterone undecylate is an ester of testosterone. This hormone is used in androgen replacement therapy primarily for the treatment of male hypogonadism, and is currently under research for use as a male contraceptive. It is sold and distributed under the brand names Andriol, Undestor, Nebido, Pantestone, Restandol, Cernos Depot, Nebido-R and Reandron 1000.
This is very special drug with it’s unique advantages and disadvantages. Professional bodybuilders usually use it only in the pause between cycles but amateur bodybuilders, females and athletes too concerned with safe usage can use it in separate cycles. Testosterone undecanoate is being converted in the body into dihydrotestosterone, which almost does not aromatize, therefore estrogen-related side effects are not an issue.
Andriol is taken orally, therefore, on the first glance, it cannot bypass the liver where all oral testosterones are being destroyed. However, pharmacologists invented following solution: testosterone undecanoate (Andriol) is being made in capsules, which contain very specific fatty acid, which makes andriol bypassing the liver and reach it’s target through lymphatic system. Unfortunately, it did not work out as planned completely. Part of substance is being absorbed through lymphatic system and converted to test as planned. Another part is moved out of the body faster than it become effective. The good thing is that the liver is not affected.