|Jmol 3D model||Interactive image|
|Molar mass||308.84 g/mol|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Norclostebol (INN) (brand name Lentabol; former developmental code names SKF-6611, CP-73), or as norclostebol acetate (brand name Anabol 4-19), is a synthetic anabolic steroid that is derived from nandrolone. It was described in the literature in 1957.
Norclostebol 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.
- J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 168–. ISBN 978-1-4757-2085-3.
- Steven B. Karch, MD, FFFLM (9 October 2007). Pathology, Toxicogenetics, and Criminalistics of Drug Abuse. CRC Press. pp. 67–. ISBN 978-1-4200-5456-9.
- James Edward Wright (1982). Anabolic Steroids and Sports: A Comprehensive, Up-to-date Summary and Discussion of the Scientific Findings about the Controversial Drugs Widely Used to Increase Muscle Size and Strength. Sports Science Consultants. ISBN 978-0-9609306-0-9.
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