SR9009, also known as Stenabolic, is a research drug that was developed by professor Thomas Burris of the Scripps Research Institute as an agonist of Rev-ErbA (i.e., increases the constitutive repression of genes regulated by Rev-ErbA)[1] with a half-maximum inhibitory concentration (IC50) = 670 nM for Rev-ErbAα and IC50 = 800 nM for Rev-ErbAβ.[2] In an animal study, some of its effects were found to be independent of REV-ERB with an unknown mechanism of action.[3]
Activation of Rev-ErbA-α by SR9009 in mice increases exercise capacity by increasing mitochondria counts in skeletal muscle.[4]
Abuse of SR9009 has been reported within the bodybuilding community, resulting in SR9009 being placed on the World Anti-Doping Agency list of prohibited drugs. SR9009 and the related SR9011 drug are described as "Hormone and Metabolic Modulators".[5][6]
^Mazzarino M, Rizzato N, Stacchini C, de la Torre X, Botrè F (November 2018). "A further insight into the metabolic profile of the nuclear receptor Rev-erb agonist, SR9009". Drug Testing and Analysis. 10 (11–12): 1670–1681. doi:10.1002/dta.2538. hdl:11573/1291262. PMID30395700. S2CID53223664.