Stenabolic is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Updated 2026-05-12. Numbers and descriptions here follow the published literature rather than marketing material.
Regulatory treatment of SR9009 reflects its investigational status. The compound has no approved human therapeutic indication, and sports authorities prohibit its use. It appears on anti-doping lists as a non-approved substance or metabolic modulator, depending on the list version. Products sold online as research chemicals are not quality-controlled medicines, so their identity and purity can differ from the label. Such products may also contain unlisted compounds, which complicates both testing and safety assessment.
Scientific discussion of SR9009 often separates animal evidence from human anecdote. Rodent studies provide controlled data on endurance, metabolism, and gene expression, but they use specific strains, doses, and treatment durations. Human reports are mostly uncontrolled and cannot establish cause and effect. Open questions include oral bioavailability, tissue distribution, metabolic stability, and long-term effects. Review articles generally call for more rigorous pharmacokinetic and safety research before any clinical use could be considered.
Detection of SR9009 in biological samples usually relies on liquid chromatography coupled to tandem mass spectrometry. This approach separates the compound from matrix components and identifies it by mass transitions. Because SR9009 can undergo metabolism, laboratories often look for both parent drug and specific metabolites. Sample preparation may involve protein precipitation or solid-phase extraction. Method validation examines sensitivity, carryover, and interference from related substances, and reference standards are required for accurate calibration.
Storage recommendations for SR9009 reference material typically specify a freezer at -20 °C or lower, with protection from moisture and light. Repeated freeze-thaw cycles can degrade small molecules and introduce variability. Stock solutions in dimethyl sulfoxide are often aliquoted to avoid repeated handling. Stability studies may examine degradation under heat, humidity, and light exposure. The compound's thiophene and nitro groups can participate in reactions that alter analytical signals over time, so such changes affect quantitative results.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Not approved for human use | Investigational status in most countries |
| Sports status | Prohibited by WADA | Classified as non-approved or metabolic modulator |
| Common analytical method | LC-MS/MS | Used for trace detection in biological samples |
| Typical test matrices | Urine and blood | Sample choice depends on testing program |
| Human trial data | None published | Effects and safety are not established |
SR9009 is a synthetic small molecule that acts on the nuclear receptors REV-ERBα and REV-ERBβ. These receptors are part of the circadian clock machinery and normally repress transcription of certain target genes. In laboratory research, SR9009 is used as a chemical tool to study how REV-ERB activity influences metabolism, inflammation, and daily biological rhythms. The compound is not an approved medicine, and its effects in humans remain largely uncharacterized. It is often described as an investigational agent rather than a therapeutic product.
REV-ERB proteins typically suppress gene expression by recruiting corepressor complexes to DNA response elements. SR9009 binds these receptors and strengthens that repressive action in cell-based assays. Studies in rodents have reported changes in lipid handling, mitochondrial function, and exercise capacity after treatment. Such findings are often cited as evidence for metabolic effects, but species differences and limited pharmacokinetic data make direct translation to humans uncertain. Researchers continue to examine which effects are robust and which depend on specific experimental conditions.
SR9009 is frequently discussed alongside other REV-ERB ligands, including synthetic agonists and natural heme-related molecules. Its selectivity for REV-ERB over related nuclear receptors has been measured in binding and reporter assays, though off-target activity at higher concentrations is possible. The compound is prohibited in sport by the World Anti-Doping Agency, and it is not approved for any medical use in major jurisdictions. Products sold online may be labeled as research chemicals, and their identity and purity are not guaranteed by regulatory review.
At the molecular level, SR9009 binds the ligand-binding domain of REV-ERB and strengthens recruitment of corepressor proteins such as NCoR and HDAC3. This increases repression of target genes, including Bmal1 and other clock-controlled and metabolic genes. In rodent studies, such changes have been linked to altered lipid handling, glucose metabolism, and energy expenditure. The precise chain of events between receptor binding and whole-body effects remains an active area of research. Findings in animals do not automatically translate to humans.
Laboratory studies often administer SR9009 by injection because oral absorption appears poor in rodents. Reported pharmacokinetic properties include rapid metabolism and low systemic exposure after oral dosing. Human pharmacokinetic data are sparse, so absorption, distribution, metabolism, and excretion in people are not well defined. Some research explores related REV-ERB compounds with improved drug-like properties. Regulatory approval for any REV-ERB agonist as a human medicine has not been granted to date.
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.
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.
===== Finland ===== In Finland, semaglutide is included in the national price regulation scheme and is available by prescription. For people with type 2 diabetes and a BMI over 27, part of the cost is covered by Kela, the Finnish social insurance institution.
Leslie Hicks is an American full professor of analytical chemistry at the University of North Carolina at Chapel Hill. Her work primarily focuses on the study of proteomics and protein post-translational modifications using mass spectrometry, and identifying biologically active peptides in plants.
It is unclear that cyproheptadine achieves adequate serotonin 5-HT2A receptor occupancy at the assessed doses. Further complicating the picture, high doses of cyproheptadine have been reported to produce partial LSD-like discriminative stimulus effects in animals.
Sources: en.wikipedia.org
De Vries acted as a close confidant to Nabil B., the crown witness in the Marengo trial whose own brother, alongside his lawyer, were assassinated by Taghi's organisation for exposing their inner workings. The person who is suspected of killing De Vries, is a relative of the person who is in charge of Taghi's hit squad, which gives the Dutch authorities more reason to believe that Taghi's organisation is responsible for the killing. However, it is still unclear who gave the order of the shooting, since Taghi himself was already in a high-security prison at the time of the shooting.
== Challenges == Despite the considerable investments made by several companies, proteins chips have yet to flood the market. Manufacturers have found that proteins are actually quite difficult to handle. Production of reliable, consistent, high-throughput proteins that are correctly folded and functional is fraught with difficulties as they often result in low-yield of proteins due to decreased solubility and formation of inclusion bodies. A protein chip requires a lot more steps in its creation than does a DNA chip. There are a number of approaches to this problem which differ fundamentally according to whether the proteins are immobilised through non-specific, poorly defined interactions, or through a specific set of known interactions. The former approach is attractive in its simplicity and is compatible with purified proteins derived from native or recombinant sources but suffers from a number of risks. Most notable amongst these relate to the uncontrolled nature of the interactions between each protein and the surface; at best, this might give rise to a heterogeneous population of proteins in which active sites are sometimes occluded by the surface; at worst, it might destroy activity altogether due to partial or complete surface-mediated unfolding of the immobilised protein.
== Fibronectin genetic variation as a protective factor against Alzheimer's disease == A specific genetic variation in Fibronectin gene was shown to reduce the risk of developing Alzheimer's disease in a multicenter, multiethnic genetic epidemiology and functional genomics study. This effect is believed to be through enhancing the brain's ability to clear the toxic waste and protein accumulation through the blood–brain barrier. A follow-up mechanistic study showed that astrocyte-derived fibronectin accumulates at the gliovascular interface in the presence of the APOE ε4 allele, disrupting VEGFA/HB-EGF/IGF-1 growth factor signaling and causing blood–brain barrier leakage, thereby establishing fibronectin as a mediator of APOE4-driven vascular dysfunction in Alzheimer's disease.
Sources: en.wikipedia.org
=== Decompensated cirrhosis === Manifestations of decompensation in cirrhosis include gastrointestinal bleeding, hepatic encephalopathy, jaundice or ascites. In patients with previously stable cirrhosis, decompensation may occur due to various causes, such as constipation, infection (of any source), increased alcohol intake, medication, bleeding from esophageal varices or dehydration. It may take the form of any of the complications of cirrhosis listed below. People with decompensated cirrhosis generally require admission to a hospital, with close monitoring of the fluid balance, mental status, and emphasis on adequate nutrition and medical treatment – often with diuretics, antibiotics, laxatives or enemas, thiamine and occasionally steroids, acetylcysteine and pentoxifylline. Administration of saline is avoided, as it would add to the already high total body sodium content that typically occurs in cirrhosis. Life expectancy without a liver transplant is low, at most three years.
=== Historic and laboratory routes === Fumaric acid was first prepared from succinic acid. A traditional synthesis involves oxidation of furfural (from the processing of maize) using chlorate in the presence of a vanadium-based catalyst.
== International reactions == Canada: Canada's ambassador to the United Nations compared U.S. president Donald Trump's Golden Dome to a protection racket after Trump said America's northern neighbor must either pay $61 billion to join the program or could agree to annexation (in which case inclusion would be free). Ambassador Bob Rae also noted that "threats to sovereign integrity are prohibited" under the Charter of the United Nations. Earlier, Canadian minister of national defence Bill Blair had expressed a willingness for participation in the Golden Dome project. China: On 21 May 2025, Foreign Ministry spokesperson Mao Ning criticized the Golden Dome plan, claiming it "violates the principle of peaceful use of space in the Outer Space Treaty". She called on the US to "give up developing and deploying [a] global anti-missile system", which risked "turning space into a war zone". In a white paper published by the State Council Information Office in November 2025, China criticized the move towards "absolute security" and that it would "pose a serious threat to outer space security". New Zealand: New Zealand defence minister Judith Collins expressed support for the Golden Dome missile system, saying "I don't see it as an attack mechanism. It's a defence mechanism. And if people did not feel they needed to defend themselves, they wouldn't waste the money on it." Trump had earlier noted the space-based system would be "a very big part of our defense and, obviously, of our offense" and capable of striking foreign assets even before they launch.
==== Sulfur ==== The original sulfur isotopic reference material was the Canyon Diablo Troilite (CDT), a meteorite recovered from Meteor Crater in Arizona. The Canyon Diablo Meteorite was chosen because it was thought to have a sulfur isotopic composition similar to the bulk Earth. However, the meteorite was later found to be isotopically heterogeneous with variations up to 0.4‰. This isotopic variability resulted in problems for the inter-laboratory calibration of sulfur isotope measurements. A meeting of the IAEA in 1993 defined Vienna Canyon Diablo Troilite (VCDT) in an allusion to the earlier establishment of VSMOW. Like the original SMOW and VPDB, VCDT was never a physical material that could be measured but was still used as the definition of the sulfur isotopic scale. For the purposes of actually measuring 34S/32S ratios, the IAEA defined the δ34S of IAEA-S-1 (originally called IAEA-NZ1) to be -0.30‰ relative to VCDT. These changes to the sulfur isotope reference materials greatly improved inter-laboratory reproducibility.
Sources: en.wikipedia.org
No. It is an investigational compound without approved therapeutic indications. It is sold for research purposes only in many jurisdictions.
Sports authorities prohibit it because it is not approved for human use and has potential performance-enhancing effects. It appears on anti-doping lists under non-approved or metabolic modulator categories.
Detection usually uses liquid chromatography-tandem mass spectrometry. The method targets the parent compound or its metabolites in urine or blood.
Liquid chromatography-tandem mass spectrometry is a common approach. It can detect the parent compound and its metabolites in biological matrices.