This is a working overview of REV-ERB agonist, written for readers who want more than a one-paragraph summary but less than a textbook.
This page was last updated on 2026-07-12 and is reviewed periodically as new material appears.
Analytical methods for SR9009 typically rely on liquid chromatography coupled with tandem mass spectrometry. The technique can separate the parent compound from related substances and detect low concentrations in biological matrices. Urine and blood are common samples in anti-doping testing, while in vitro studies may use cell culture media. Rapid metabolism and low expected concentrations make method validation important for reliable identification. Exact metabolite patterns can vary by species and are not fully mapped.
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.
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.
| 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 |
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.
Handling recommendations for SR9009 in a laboratory setting include storing the solid at low temperature, protected from light and moisture. The compound is often dissolved in dimethyl sulfoxide or ethanol for experiments. Solutions should be prepared with appropriate personal protective equipment and disposed of according to local rules. Stability data for long-term storage are limited, so stock solutions are typically kept cold and used within defined periods. Records of preparation date and concentration support reproducibility.
SR9009 is not approved as a medicine by major regulatory agencies. It is commonly sold as a research chemical, a category that may fall outside customary drug approval and quality rules. In sports, the World Anti-Doping Agency lists SR9009 as a prohibited substance. Athletes who use it can face sanctions if it is detected in a sample. Legal status varies by country, and importation may be restricted. Enforcement practices differ across borders.
Detection of SR9009 in biological samples usually employs liquid chromatography coupled with tandem mass spectrometry. This method can identify the parent compound and sometimes metabolites in urine or blood. Because exposure can be low and clearance may be rapid, sample timing and limits of detection matter. Laboratories validate assays for sensitivity and specificity. Results are interpreted alongside chain-of-custody and quality-control records. Urine is the common matrix for anti-doping analysis, while blood may be used in research settings.
SR9009 is frequently discussed in fitness and research-chemical contexts, yet it has no approved medical indication. Regulatory agencies have not authorized it for human use, and it is not a standard prescription drug. Some sports organizations list it as a prohibited substance because of its potential performance-enhancing properties. Published human data are sparse, so claims about its effects in people often rely on animal models or anecdotal reports. Quality and identity of online materials can vary widely.
SR9009 is a synthetic small molecule studied as a REV-ERB agonist. REV-ERBα and REV-ERBβ are nuclear receptors that help regulate circadian rhythms and metabolic gene expression. The compound was identified in academic screening efforts to find synthetic ligands for these receptors. In cell and animal studies, SR9009 alters transcription of genes involved in lipid and glucose metabolism, and it can shift circadian behavior. It is not an approved therapeutic agent.
=== Canada === In 2002, Health Canada issued an order prohibiting the sale of any product containing kava. While the restrictions on kava were lifted in 2012, Health Canada lists five kava ingredients, as of 2017, and manufactured products containing kava or its extracts must be approved by the federal government before marketing.
The Liberal Democrats win the Talbot and Branksome Woods by-election for Bournemouth, Christchurch and Poole Council. Reform UK win their first seat on Vale of Glamorgan Council at a by-election in Illtyd in Barry. 12 September – The new Foreign Secretary Yvette Cooper visits Ukraine. The House of Lords begins its scrutiny of the Terminally Ill Adults (End of Life) Bill. Nigel Farage says he has no "financial stake" in a house bought by his partner in his Clacton constituency. In a since deleted social media post, Blackpool councillor Jim O'Neill, who defected from the Conservatives to Reform UK, says that Reform have let too many Conservative "rejects" in. Manchester Metropolitan University strips Peter Mandelson of the honorary doctorate given to him upon his appointment as Chancellor in 2016, and the commemorative medal given to him at the end of his tenure in 2024. 15 September – Paul Ovenden resigns as a senior aide to the prime minister after sexually explicit and offensive text messages sent by him in 2017 and concerning MP Diane Abbott came to light. Former Shadow Minister for Work and Pensions Danny Kruger leaves the Conservative Party to join Reform UK. 16 September – US President Donald Trump arrives in the UK for his second state visit. Labour MPs Simon Opher and Peter Prinsley, who were part of a parliamentary delegation visiting the West Bank to see humanitarian and medical work, say they have been refused entry into Israel. Conservative Party leader Kemi Badenoch begins presenting a monthly phone-in on LBC.
S8 + 8 O2 → 8 SO2, ΔH = −297 kJ/mol To aid combustion, liquified sulfur (140–150 °C (284–302 °F) is sprayed through an atomizing nozzle to generate fine drops of sulfur with a large surface area. The reaction is exothermic, and the combustion produces temperatures of 1,000–1,600 °C (1,830–2,910 °F). The significant amount of heat produced is recovered by steam generation that can subsequently be converted to electricity. The combustion of hydrogen sulfide and organosulfur compounds proceeds similarly. For example:
Sources: en.wikipedia.org
Immunohistochemical studies have revealed that AADC is expressed in various neuronal cell types such as serotonergic and catecholaminergic neurons. Neurons that express AADC but are not considered classical monoaminergic cell neurons are termed D cells. Cells that are immunoreactive for AADC have also been found in the human brainstem. These cells include melanin-pigmented cells that are typically designated as catecholaminergic and may also be serotonergic. Significant localization of dopaminergic cells that are also immunoreactive for AADC is reported in the substantia nigra, ventral tegmental area, and the mesencephalic reticular formation. Unlike previous reports on animal models, nonaminergic (D cells) are unlikely to be observed in the human brain.
==== Assessments ==== Heseltine was not popular with his ministerial peers at this time. A story was told of how ministers had volunteered him to be the one "taken hostage by terrorists" in a mooted training exercise. Nonetheless, Heseltine emerged from the Heath government with an enhanced reputation. He had avoided the worst crises of that government: the two miners' strikes, incomes policy, industrial relations policy and Northern Ireland, as well as any direct involvement in British entry into the EEC. Heseltine's career under Heath's ministry saw him associated with local government reorganisation, prestige projects, Europe and state aid to industries, themes which would recur throughout his career. He had attained a higher public profile than many Cabinet ministers, and by 1974 he was being seriously tipped as a future prime minister. Heseltine was promoted to the Shadow Cabinet in June 1974 as Industry spokesman. If the Conservatives had won either of the general elections in 1974 (February or October) he would almost certainly have joined the Cabinet. He was shadowing Tony Benn, who planned a major expansion of public ownership through the National Enterprise Board. In the summer of 1974, Heseltine put together a team of over 20 Conservative MPs, each a specialist in a particular industry, to campaign against Benn's plans.
=== We–Wh === Edwin C. Webb (1921–2006). British (later Australian) biochemist at the University of Queensland and Macquarie University. Editor of Enzyme Nomenclature until 1992. Gregorio Weber (1916–1997). Argentinian spectroscopist at the University of Illinois, who pioneered the application of fluorescence spectroscopy to the biological sciences. Member Natl. Acad. Sci. USA, National Academy of Sciences of Argentina. Stephen C. West FRS (b. 1952). British biochemist at the Francis Crick Institute, London, known for his work on DNA recombination and repair. Foreign Associate Natl. Acad. Sci. USA. Hans Westerhoff (b. 1953). Dutch biochemist at the Universities of Amsterdam and of Manchester, known for work in systems biology and metabolic regulation. Frank Henry Westheimer (1912–2007). American chemist at Harvard who did pioneering work in physical organic chemistry, applying techniques from physical to organic chemistry and integrating the two fields. Member Natl. Acad. Sci. USA. John Westley (b. 1927). American enzymologist at the University of Chicago known for work on rhodanese and sulfurtransferases in general. Frederick Whatley (1924–2020). British botanist and biochemist at the University of Sydney known for work on photosynthesis. William Joseph Whelan FRS (1924–2021). British-American biochemist at the University of Miami, who worked on the structure of glycogen, and discovered the protein glycogenin at its core. He was very active in the creation of international organizations, including the IUB (now IUBMB) and FEBS.
Ancient authors, such as Tacitus and Suetonius, are unanimous about poison having been added to the mushroom dish, rather than the dish having been prepared from poisonous mushrooms. Wasson speculated the poison used to kill Claudius was derived from death caps, with a fatal dose of an unknown poison (possibly a variety of nightshade) being administered later during his illness. Other historians have speculated that Claudius may have died of natural causes. In the 2023 Leongatha mushroom murders, Australian woman Erin Patterson was found guilty of three murders and one attempted murder of members of her estranged husband's family by serving them beef Wellingtons that contained A. phalloides. Three of the four guests died within days of the meal, while one survived after weeks in a coma.
Sources: en.wikipedia.org
=== Body odor and acne === Rising levels of androgens can change the fatty acid composition of perspiration, resulting in a more "adult" body odor. This often precedes thelarche and pubarche by one or more years. Another androgen effect is increased secretion of oil (sebum) from the skin. This change increases the susceptibility to acne, a skin condition that is characteristic of puberty. Acne varies greatly in its severity.
=== Internet === The NOS is also responsible for the news and sports sites of the Dutch public broadcasters. The editorial staff of the internet pages is also responsible for the teletext pages on NPO 1, NPO 2 and NPO 3.
Silver staining is the use of silver to stain histologic sections. This kind of staining is important in the demonstration of proteins (for example type III collagen) and DNA. It is used to show both substances inside and outside cells. Silver staining is also used in temperature gradient gel electrophoresis. Argentaffin cells reduce silver solution to metallic silver after formalin fixation. This method was discovered by Italian Camillo Golgi, by using a reaction between silver nitrate and potassium dichromate, thus precipitating silver chromate in some cells (see Golgi's method). Argyrophilic cells reduce silver solution to metallic silver after being exposed to the stain that contains a reductant. An example of this would be hydroquinone or formalin.
== Prognosis == Prognosis depends on the individual form of muscular dystrophy. Some dystrophies cause progressive weakness and loss of muscle function, which may result in severe physical disability and a life-threatening deterioration of respiratory muscles or heart. Other dystrophies do not affect life expectancy and only cause relatively mild impairment.
Aleme Eshete observes that “the ‘Mahal Safari’ movement may be taken as the first signal that alerted the Ethiopian Government of a Bolshevik-type popular movement,” indicating that the term later took on broader political connotations.
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.
SR9009 is a synthetic research compound that binds and modulates the nuclear receptors REV-ERBα and REV-ERBβ. It is used in laboratory studies of circadian biology and metabolism, not as an approved medicine. It is also known by the informal name Stenabolic.