According to a recent paper authored by GTx, “Readers are cautioned to keep in mind that the name Ostarine is often erroneously linked to the chemical structure of [S-4], which is likewise known as andarine.
The chemical structure of Ostarine has not been openly revealed.”  While GTx has not formally divulged the framework of Ostarine, the chemical structure of Ostarine is disclosed in license databases such the WIPO  and also reviewed by Zhang et al., 2009 in the main literature.  Different SARM chemotypes exist (aryl propionamides, quinolines, quinolinones, bicyclic hydantoins), though aryl propionamides such as Ostarine, Andarine/S -4, and S-23 represent a few of one of the most sophisticated suppositious therapies under examination.  In terms of atom connection, Ostarine varies from Andarine by cyano replacements on the phenyl rings as it changes both the nitro and also acetamido moieties.
WARNING: This product, MK2866 is for research use only. MK2866 is NOT for human use and can be harmful if ingested into the body. MK2866 is for research laboratory use only and all Mk2866 dosage amounts for non-human use and only research use must be consulted with by a trained professional. This Product is NOT to be injected. Mk2866 should only be handled by licensed, qualified professionals. Mk2866 is not a drug, food, or cosmetic and should not be misbranded, misused or mislabeled as a drug, food or cosmetic. MK2866 is a research chemical for research purposes.
|Molecular Weight||389.334 g/mol|
|Hydrogen Bond Donor Count||2|
|Hydrogen Bond Acceptor Count||8|
|Rotatable Bond Count||5|
|Exact Mass||389.099 g/mol|
|Monoisotopic Mass||389.099 g/mol|
|Topological Polar Surface Area||106 A^2|
|Heavy Atom Count||28|
|Isotope Atom Count||0|
|Defined Atom Stereocenter Count||1|
|Undefined Atom Stereocenter Count||0|
|Defined Bond Stereocenter Count||0|
|Undefined Bond Stereocenter Count||0|
|Covalently-Bonded Unit Count||1|