Everything below concerns REV-ERB agonist. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-05-19. Numbers and descriptions here follow the published literature rather than marketing material.
Detection in biological samples can be complicated by rapid metabolism and low circulating concentrations. Some studies report phase I and phase II metabolites, and analytical methods may need to target those species in addition to the parent compound. Immunoassays are not broadly available, so mass spectrometry remains the main confirmatory approach. For anti-doping testing, laboratories look for SR9009 and its metabolites using validated LC-MS methods. Open questions include how long metabolites remain detectable and how different routes of administration alter detection windows.
In laboratory settings, SR9009 is typically characterized by liquid chromatography–mass spectrometry (LC-MS) or high-performance liquid chromatography with ultraviolet detection (HPLC-UV). These methods can confirm identity and estimate purity, but they require reference standards for accurate quantification. Because SR9009 is not a licensed pharmaceutical, no harmonized pharmacopeial monograph exists. Laboratories often validate in-house methods for matrices such as plasma, urine, or cell culture media. Sample preparation may involve protein precipitation or liquid-liquid extraction before analysis.
Physicochemical behavior influences handling. SR9009 is described as a solid with limited aqueous solubility, so organic solvents such as dimethyl sulfoxide or ethanol are common in research stock solutions. Aqueous dilution can produce precipitates if the organic content is too low. Light, heat, and repeated freeze-thaw cycles may affect stability. Storage recommendations usually specify a desiccated freezer environment protected from light, but exact stability data depend on the formulation and matrix.
Regulatory treatment of SR9009 varies by country and context. It is not approved as a therapeutic drug by agencies such as the United States Food and Drug Administration or the European Medicines Agency. Sports authorities list it as a prohibited substance; the World Anti-Doping Agency classifies it among hormone and metabolic modulators. Legal status for personal possession or sale differs across jurisdictions, and some countries may restrict it under analog or research chemical laws. Buyers who seek verified material often rely on independent laboratory testing because online product labels may not match contents.
Laboratory samples of SR9009 are typically handled as research chemicals rather than pharmaceuticals. Suppliers usually state that the material is for research use only and not for human or veterinary administration. Storage recommendations generally call for a freezer at approximately −20 °C, protection from light, and a desiccated environment. The solid is often described as a white to off-white powder. Solubility is commonly reported in organic solvents such as dimethyl sulfoxide and ethanol, with low solubility in water.
| Property | Value | Notes |
|---|---|---|
| Appearance | Off-white to pale yellow solid | Visual description varies with purity and source |
| Solubility | Soluble in DMSO and ethanol; poorly soluble in water | Organic stock solutions are common in research |
| Typical storage | -20 °C, desiccated, protected from light | Avoid repeated freeze-thaw cycles |
| Typical analytical method | LC-MS or HPLC-UV | Reference standards are needed for quantification |
| Molar mass | Approximately 437.9 g/mol | Calculated from the reported free-base formula |
Research interest in SR9009 grew from studies of circadian biology and metabolic disease. Preclinical reports describe effects on exercise capacity, muscle metabolism, and blood lipid levels in rodents, but these findings come from controlled laboratory settings. The compound has low oral bioavailability in animals, which limits systemic exposure after swallowing. Investigators often use injected routes in experiments to achieve measurable plasma concentrations. Human clinical data are sparse, no approved therapeutic product exists, and whether animal effects translate to humans remains an open question.
Regulatory and sporting contexts treat SR9009 as a prohibited substance in many elite competitions. Its presence on banned lists reflects concerns about performance enhancement and unknown long-term safety. Analytical chemists have developed methods to detect the parent compound and its metabolites in urine and blood. Literature discussions distinguish between in vitro potency, animal pharmacology, and anecdotal human reports. The latter are difficult to verify because products sold online may lack purity or contain different compounds.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. These receptors help regulate circadian rhythms, lipid metabolism, and inflammatory gene expression. In cell and animal experiments, SR9009 alters transcription of clock-controlled genes and metabolic pathways. The compound is not a hormone and does not resemble classical steroid structures. Its activity depends on binding to the ligand-binding domain of REV-ERB, where it can modify corepressor recruitment.
SR9009 is often grouped with compounds studied for circadian and metabolic regulation rather than with classical anabolic steroids. Its interactions with nuclear receptors differ from those of androgen receptor ligands, and its proposed mechanisms involve transcriptional control rather than direct hormone signaling. Some sources classify it as a metabolic modulator because of observed effects on energy utilization. The distinction matters for regulation and for interpreting research results across different compound classes.
SR9009 is a synthetic small molecule developed as a REV-ERB agonist. It binds to REV-ERBα and REV-ERBβ, nuclear receptors that help regulate circadian rhythms and metabolic gene expression. In cell and animal studies, the compound alters lipid and glucose handling and influences skeletal muscle oxidative capacity. Its exact effects in humans remain largely uncharacterized because controlled clinical trials have not been reported. The molecule is frequently described in preclinical literature as a metabolic modulator.
== Structure == Although engineered and modified in a laboratory setting, ELPs share structural characteristics with intrinsically disordered proteins (IDPs) naturally found in the body, such as tropoelastin, from which ELPs were given their name. The repeat sequences found in the biopolymer give each ELP a distinct structure, as well as influence the lower critical solution temperature (LCST), also referred to commonly as the Tt. It is at this temperature that the ELPs move from a linear, relatively disordered state to a more densely aggregated, partially ordered state Although given as a single temperature, Tt, the ELP phase change process generally begins and ends within a temperature range of approximately 2 °C. Also, Tt is altered by the addition of unique proteins to the free ELPs.
Clinical: International assessment of diagnostics and therapy with the aim of improving clinical understanding and treatment procedures. Clinical-translational: Analysis of the significance of plasma and urine steroid profiles / liquid biopsy with the aim of identifying suitable tumor markers. Experimental: Identification of immunohistochemical characteristics and DNA sequencing with the aim of identifying drugable targets, i.e., targets for the drug treatment of tumor cells. This should ensure that healthy cells are spared from the drug as much as possible.
Hunter requested greater control by authorities in England and an excise duty on rum. He issued an order restricting the amount of convict labour that officers could use, but again had no means to enforce it. Hunter was strongly opposed by officers of the Corps, and pamphlets and letters against him were circulated. John Macarthur wrote a letter accusing Hunter of ineffectiveness and trading in rum. Hunter was required by the Colonial Office to answer the charges, and soon after was recalled for being ineffective. In 1799 Paterson, now a Lieutenant Colonel, returned from England with orders to stamp out the trading in rum by officers of the Corps. In 1800, he charged Major George Johnston, who had served as Hunter's aide-de-camp, with giving a sergeant part payment in rum at an exorbitant rate. Johnston claimed he was being unfairly persecuted and demanded that he be sent to England for trial. The English courts decided that colonial affairs were not a matter for them and, as all the evidence and witnesses were in Sydney, that any trial should be held there. They decided that, as proper court martial could not be constituted in Sydney, no further action should be taken against Johnston. Governor Philip King, appointed in September 1800, continued Hunter's efforts to prevent the Corps trading in rum. He had the power to levy an excise duty on alcohol, and the Transit Board now required all ships to lodge a bond which was forfeit for disobeying the Governor's orders, which included the prohibition of the landing of more than 500 gallons of rum.
High temperature conditions during the initial stages of implantation will increase the impurity diffusion in the substrate and as a result limit the impinging ion saturation, which is required for nanoparticle nucleation. Both the implant temperature and ion beam current density are crucial to control in order to obtain a monodisperse nanoparticle size and depth distribution. A low current density may be used to counter the thermal agitation from the ion beam and a buildup of surface charge. After implantation on the surface, the beam currents may be raised as the surface conductivity will increase. The rate at which impurities diffuse drops quickly after the formation of the nanoparticles, which act as a mobile ion trap. This suggests that the beginning of the implantation process is critical for control of the spacing and depth of the resulting nanoparticles, as well as control of the substrate temperature and ion beam density. The presence and nature of these particles can be analyzed using numerous spectroscopy and microscopy instruments. Nanoparticles synthesized in the substrate exhibit surface plasmon resonances as evidenced by characteristic absorption bands; these features undergo spectral shifts depending on the nanoparticle size and surface asperities, however the optical properties also strongly depend on the substrate material of the composite.
Amid renewed rumours of an impending Rhodesian UDI, Smith travelled to meet Wilson in London at the start of October 1965, telling the press that he intended to resolve the independence issue once and for all. Both the British and the Rhodesians were surprised by the large numbers of Britons who came out to support Smith during his visit. Smith accepted an invitation from the BBC to appear on its Twenty-Four Hours evening news and current affairs programme, but Downing Street blocked this at the last minute. Following largely abortive talks with Wilson, the Rhodesian prime minister flew home on 12 October. Desperate to avert UDI, Wilson travelled to Salisbury two weeks later to continue negotiations. During these discussions, Smith referred to the last resort of a UDI on many occasions, though he said he hoped to find another way out of the quandary. He offered to increase black legislative representation by expanding the electorate along the lines of "one taxpayer, one vote"—which would enfranchise about half a million, but still leave most of the nation voteless—in return for a grant of independence. Wilson said this was insufficient, and countered that future black representation might be better safeguarded by Britain's withdrawal from the colonial government of the power it had held since 1923 to determine the size and makeup of its parliament. The Rhodesians were horrified by this prospect, particularly as Wilson's suggestion of it seemed to them to have removed the failsafe alternative of keeping the status quo.
Sources: en.wikipedia.org
=== Kosher and halal === All Coffee Bean coffees, teas, and the powders used to make other beverages, are certified kosher. As of June 2020, Coffee Bean ended its storewide kosher-only certification for stores and bakery items in Southern California. Storewide kosher certification was ended for Coffee Bean locations in the Las Vegas area months earlier. While Coffee Bean had planned to move away from kosher-only certification to provide more offerings as a phased rollout before the COVID-19 pandemic, the company said the crisis accelerated its plan. Prior to June 2020, all company-owned locations in Southern California were certified kosher. During that time, most in California and Nevada had signed and dated certificates indicating that the entirety of their items were kosher in conformance to the standards of the certifying agency, the Kosher Supervision of America. Even before June 2020, privately owned franchise stores could opt-out of kosher certification. All the company's locations in Singapore and Malaysia are halal.
Conversely, Han Chinese from provinces and regions like Shaanxi and Inner Mongolia have exceptionally high northern East Asian ancestry. Han Chinese from Guangxi and Hainan cluster with Han Chinese from Guangdong but exhibit admixture with minority groups from their respective provinces. One study shows higher affinities between Han Chinese from Northern Guangxi and local Austronesian and Kra-Dai groups compared to Han Chinese from Southern Guangxi. Another study shows stronger affinities between Han Chinese from Hainan and Tujia, Bai, She, Yunnan Yi and Sinitic-speaking populations compared to indigenous Hlai peoples, who show more Kra-Dai affinities. Lingnan Han Chinese also share affinities with the Kinh Vietnamese, although other studies show stronger affinities between Dai people and Kinh Vietnamese. Ancient population admixture with Ami and Atayal exists for Han Chinese from Guangdong and Sichuan and the ancestors of Taiwanese Han. In contrast, Southwestern Han Chinese exhibit admixture with neighboring Hmong-Mien-speaking and lowland Tibeto-Burman-speaking populations and have higher northern East Asian affinities. Highland Tibetan-related ancestry is also detected in some Northern and Central Han Chinese. Eastern Han Chinese from provinces like Jiangsu, Shanghai, Zhejiang and Shandong exhibit high genetic continuity with ancient populations from Jiangsu and Shandong.
=== Breast cancer === Studies into breast cancers have found that the loss or alteration of NonO in conjunction with the loss of the estrogen receptor hERα results in more aggressive breast cancers which show an increase in both tumor size and metastases.
Although an estimated 43,000 species of bacteria have been named, most of them have never been studied. In fact, just 10 bacterial species account for half of all publications, whereas nearly 75% of all named bacteria have no academic research devoted to them. The best-studied species, Escherichia coli, has more than 300,000 studies published on it, but many of these papers likely use it only as a cloning vehicle to study other species, without providing any insight into its own biology. 90% of scientific studies on bacteria focus on less than 1% of species, mostly pathogenic bacteria relevant to human health. While E. coli is probably the best-studied bacterium, a quarter of its 4000 genes are poorly studied or remain uncharacterized. Some bacteria with minimal genomes (< 600 genes, e.g. Mycoplasma) usually have a large fraction of their genes functionally characterized, given that most of them are essential and conserved in many other species.
Sources: en.wikipedia.org
It is usually detected by LC-MS or HPLC-UV against a reference standard. In biological matrices, metabolite targeting can improve detection. No universal immunoassay is widely available.
The compound is generally handled as light-sensitive and stored cold and dry. Stability in solution depends on solvent, concentration, and storage time. Specific degradation rates are not fully standardized.
Limited water solubility affects formulation for cell and animal studies. Organic co-solvents are often used to dissolve it. Precipitation can confound assay results if not controlled.
Legality depends on the country and the intended use. In many places it is sold as a research chemical, but sports and medicine regulations restrict it.