99% White Prohormone Steroids 19-Norandrostenedione DHEA CAS 734-32-7 For A Stimulation Of Healthy The Weight Lossing

 99% White Prohormone Steroids 19-Norandrostenedione DHEA CAS 734-32-7 For A Stimulation Of  Healthy  The Weight Lossing


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Basic View :


   Norandrostenedione

· Alias :19-Norandrostenedione,19-Nor-4-androstenedione,19-Norandrost-4-ene-3,17-dione

· CAS NO : 734-32-7

· EINECS : 211-995-8

· MF : C18H24O2

· MW : 272.38

· Appearance : White powder

· Grade : Pharmaceutical Grade

· Storage : Shading, confined preservation

· Manufacturer : Yi Jing

· USage : 9-Norandrostenedione (4-estrene-3,17-dione, NOR) is a precursor of the anabolic steroid nandrolone.




Introduction:



1. Dehydroepiandrosterone (DHEA, more correctly didehydroepiandrosterone), also known as androstenolone or prasterone (INN), as well as 3-hydroxyandrost-5-en-17-one or 5-androsten-3-ol-17-one, is an important endogenous steroid hormone. It is the most abundant circulating steroid hormone in humans, in whom it is produced in the adrenal glands, the gonads, and the brain, where it functions predominantly as a metabolic intermediate in the biosynthesis of the androgen and estrogen sex steroids. However, DHEA also has a variety of potential biological effects in its own right, binding to an array of nuclear and cell surface receptors, and acting as a neurosteroid.



2.2.19-Norandrostenedione (4-estrene-3,17-dione, NOR) is a precursor of the anabolic steroid nandrolone. Until 2005 19-Norandrostenedione was available without prescription in United States, where it was marketed as a prohormone, but it is now classified as a Schedule III drug. It is also banned from use in many sports, including the Olympic Games, under the World Anti-Doping Code. 19-Norandrostenedione is readily metabolized to nandrolone after oral administration, but its potency to transactivate the androgen receptor dependent reporter gene expression is 10 times lower as compared to dihydrotestosterone (DHT).


 Application:


In vivo experiments in castrated rats demonstrated that subcutaneous treatment with 19-norandrostenedione resulted only in a stimulation of the weight of the levator ani muscle, while the prostate and seminal vesicle weights remained completely unaffected. In contrast to its metabolite nandrolone, 19-norandrostenedione highly selectively stimulates the growth of the skeletal muscles but has only weak androgenic properties.