SR9009 raises a handful of sensible questions. This page answers them in order, starting with the fundamentals and moving to applications.
Reviewed 2025-09-16. Anything still debated is marked as such rather than presented as settled.
Analytical chemists detect SR9009 with liquid chromatography-tandem mass spectrometry, commonly abbreviated LC-MS/MS. Sample preparation may involve protein precipitation, liquid-liquid extraction, or solid-phase extraction before analysis. Laboratories can target the parent compound or its metabolites, depending on the matrix and the purpose of testing. Anti-doping methods require sensitive and specific assays because concentrations in biological samples can be low. Reference standards and validated methods are essential for reliable identification and quantification.
Regulatory agencies have not approved SR9009 for human therapeutic use. It is typically sold as a research chemical with labels stating that it is not for human consumption. The World Anti-Doping Agency prohibits the substance in sport, generally under the category of non-approved substances. Customs and national laws may restrict importation, sale, or possession. Product quality and legal status can vary by country and vendor, and therapeutic claims are not permitted in regulated advertising because the compound lacks approval.
Several misconceptions surround SR9009. It is often described as a SARM, a steroid, or an exercise pill, but its known target is the REV-ERB receptor family. Rodent studies have examined exercise capacity and metabolic markers, yet human outcomes remain unproven. Oral bioavailability appears low in animals, and human pharmacokinetics are not well characterized. Online products may contain impurities or different compounds, so identity and purity testing are important for research use.
Preclinical reports have linked SR9009 to improved endurance and altered energy expenditure in rodents. Such findings have prompted interest in whether REV-ERB activation can influence skeletal muscle metabolism. However, the reported effects depend on dose, route, and experimental model, and replication across laboratories is limited. Human trials have not established comparable outcomes, so claims about exercise performance remain speculative. The absence of controlled human data is a central limitation in interpreting these observations.
The mechanism of action involves binding to REV-ERB receptors and recruiting corepressor complexes, which represses target gene transcription. This contrasts with many nuclear receptor agonists that activate transcription. Downstream effects may include changes in autophagy, mitochondrial biogenesis, and lipid handling, but the precise pathways remain an active area of study. Whether these molecular events translate into meaningful physiological effects in humans is unresolved. Most evidence comes from cultured cells and rodent models rather than human participants.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Not approved for human use | Research-use-only status in many markets |
| WADA status | Prohibited in sport | Generally listed as a non-approved substance |
| Detection technique | LC-MS/MS | Common for urine and blood analysis |
| Common alias | Stenabolic | Informal market nickname, not a pharmacopoeial name |
| Purity check | HPLC or LC-UV | Independent certificate of analysis is typical |
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is not a steroid, peptide, or natural hormone. In scientific literature, it appears under the code SR9009 and in non-scientific contexts as Stenabolic. The compound was identified through chemical screening efforts aimed at targeting circadian clock components. Its status remains investigational, and no regulatory agency has approved it as a human medicine.
REV-ERB proteins help regulate daily cycles in gene expression, including genes tied to lipid and glucose metabolism. SR9009 binds these receptors and alters their activity in cell and animal experiments. Consequences observed in rodents include changes in skeletal muscle oxidative capacity, blood lipid levels, and exercise performance. The precise chain from receptor occupancy to whole-body effects is still an active area of study. Human responses cannot be assumed from rodent data.
Most published work on SR9009 consists of preclinical studies. It is widely sold as a research chemical, a category that does not imply safety, efficacy, or pharmaceutical-grade quality. Sports anti-doping organizations have listed SR9009 as a prohibited substance, and its presence in an athlete sample can lead to sanctions. Legal status differs by country; in several jurisdictions it is not approved for human consumption and may be treated as an unapproved new drug.
Machine learning algorithms train their models to distinguish known disease-associated from neutral mutations whereas other methods do not explicitly train their models but almost all methods exploit the evolutionary conservation assuming that changes at conserved positions tend to be more deleterious. While majority of methods provide a binary classification of effects of mutations into damaging and benign, a new level of annotation is needed to offer an explanation of why and how these mutations damage proteins. Moreover, if the mutation occurs in the region of the gene where transcriptional machinery binds to the protein, the mutation can affect the binding of the transcription factors because the short nucleotide sequences recognized by the transcription factors will be altered. Mutations in this region can affect rate of efficiency of gene transcription, which in turn can alter levels of mRNA and, thus, protein levels in general. Point mutations can have several effects on the behavior and reproduction of a protein depending on where the mutation occurs in the amino acid sequence of the protein. If the mutation occurs in the region of the gene that is responsible for coding for the protein, the amino acid may be altered. This slight change in the sequence of amino acids can cause a change in the function, activation of the protein meaning how it binds with a given enzyme, where the protein will be located within the cell, or the amount of free energy stored within the protein.
Muammar Muhammad Abu Minyar al-Gaddafi (c. 1942 – 20 October 2011) was a Libyan military officer, revolutionary, politician, and political theorist who ruled Libya from 1969 until his overthrow by Libyan rebel forces in 2011 during the First Libyan Civil War. He came to power through a bloodless military coup, first becoming Revolutionary Chairman of the Libyan Arab Republic from 1969 to 1977, Secretary General of the General People's Congress from 1977 to 1979, and then the Brotherly Leader of the Great Socialist People's Libyan Arab Jamahiriya from 1979 to 2011. Initially ideologically committed to Arab nationalism and Arab socialism, Gaddafi later ruled according to his own Third International Theory. Gaddafi became an Arab nationalist while at school in Sabha, later enrolling in the Royal Military Academy, Benghazi. He founded a revolutionary group known as the Free Officers movement which deposed the Western-backed Senussi monarchy of Idris I in a 1969 coup. Gaddafi converted Libya into a republic governed by his Revolutionary Command Council. Ruling by decree, he deported Libya's Italian population and ejected its Western military bases. He strengthened ties to Arab nationalist governments and unsuccessfully advocated pan-Arab political union. An Islamic modernist, he introduced Sharia law and promoted Islamic socialism. He nationalized the oil industry and used the increasing state revenues to bolster the military, fund foreign revolutionaries, and implement social programs emphasizing housebuilding, healthcare and education projects.
== Hapten coupling == Haptens can be coupled to KLH using several methods. A simple one-step coupling can be performed using the carbodiimide crosslinker EDC to covalently attach carboxyls to primary amines. This method is the simplest to perform and the "random" orientation allows for antibody generation against all possible epitopes, but it generally results in some degree of polymerization, which decreases solubility making the conjugate more difficult to handle. KLH can be activated with the crosslinker Sulfo-SMCC, which converts lysine residues to sulfhydryl-reactive maleimide groups. A sulfhydryl-containing hapten can then be reacted with the KLH to complete the immunogen without causing polymerization. The specificity of this reaction is ideal for situations where the cysteine is located away from the desired epitope (e.g. in peptides where a terminal cysteine can be added to either end of the peptide). Maleimide activated KLH, where the first part of this two step procedure has been completed, is commercially available.
=== Appearance and form === DMT is commonly handled and stored as a hemifumarate, as other DMT acid salts are extremely hygroscopic and will not readily crystallize. Its freebase form, although less stable than DMT hemifumarate, is favored by recreational users choosing to vaporize the chemical as it has a lower boiling point. DMT is a lipophilic compound, with an experimental log P of 2.57.
Sources: en.wikipedia.org
Melo was chosen by the state PMDB branch to run as the vice-mayoral pick of José Fortunati, a member of the Democratic Labour Party (PDT) and a mayoral candidate in Porto Alegre in 2012. With Fortunati's victory in the first round, Melo became vice-mayor on 1 January 2013. He became an honorary citizen of Porto Alegre in 2016, through a chamber initiative.
The two yeast genera; Pichia (sensu lato) and Saccharomyces, have similar growth conditions and tolerances; thus, the culture of Komagataella can be adopted by labs without many modifications. Moreover, unlike S. cerevisiae, Komagataella has the ability to functionally process proteins with large molecular weight, which is useful in a translational host. Considering all the advantages, Komagataella can be usefully employed as both a genetic and experimental model organism.
== Life == Archerd was always interested in medicine but had neither the discipline nor the money to pursue his interest. In 1940 and 1941, he worked as an assistant at the Camarillo State Mental Hospital in wards where patients were treated with insulin shock therapies. In 1950, he was sentenced to five years of probation for possession of morphine in San Francisco. After another conviction, this parole was revoked. After escaping from a minimum-security prison in Chino, he was rearrested, put in San Quentin Prison, and released again in 1953 on probation. His home was in the Alhambra region of the San Gabriel Valley in Los Angeles County, California.
Sources: en.wikipedia.org
Legality depends on the country and the intended use. In many places it is not approved as a medicine and may be sold only as a research chemical. Importation or possession can be restricted, and sports organizations prohibit it.
Anti-doping laboratories typically use LC-MS/MS to detect SR9009 or its metabolites in urine or blood. The exact assay depends on the laboratory and the testing program. Detection can be challenging because the compound may be rapidly metabolized and present at low levels.
Stenabolic is an informal nickname used in online fitness and research-chemical markets, not an official drug name. It likely references reported effects on endurance in rodent studies. The nickname does not imply approval or proven human benefit.
It is a synthetic compound that acts as an agonist at REV-ERBα and REV-ERBβ. It is used mainly as a research chemical to study circadian and metabolic pathways. It is not approved for human therapeutic use.