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Norclostebol

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Title: Norclostebol  
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Subject: Anabolic steroid, Epitiostanol, Tiomesterone, Bolazine, Bolenol
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Norclostebol

Norclostebol
Identifiers
CAS number  YesY
PubChem
ChemSpider  N
Jmol-3D images Image 1
Properties
Molecular formula C18H25ClO2
Molar mass 308.84 g/mol
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N   YesY/N?)

Norclostebol is an anabolic steroid derived from nandrolone. In particular it is a 4-chloro derivative modified with an acetate ester to slightly slow the release of the steroid in its free form from the injection site. Norclostebol works out to be significantly stronger than pure testosterone. It is approximately 6.6 times as anabolic while only 40% as androgenic. This may not be a particularly fair or valid comparison however. It is more appropriate to compare norclostebol to testosterone propionate due to the use of an ester. In this case they are fairly even in anabolic potency at 112% but only 20-25% as androgenic. In practice this means Norclostebol is a potent anabolic compound with minimal tendency towards side effects. Norclosterbol acetate was first developed as a medicine in 1956 by Piam and given the name Anabol 4-19. The 4-19 is a reference to the particular structure of the steroid. It is a 4-chloro 19-nortestosterone (nandrolone) derivative. Anabol 4-19 production was ceased by the manufacturer many years ago and it is now relatively unknown.


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