SR9009 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 2026-03-24. Numbers and descriptions here follow the published literature rather than marketing material.
Identity and purity of SR9009 samples are usually checked with chromatographic and spectrometric methods. High-performance liquid chromatography can separate the compound from related impurities, while mass spectrometry provides molecular mass confirmation. Nuclear magnetic resonance spectroscopy may be used for structural verification in research settings. No single method proves biological activity, and certificates of analysis should be reviewed alongside raw data. Independent testing is often needed because online products vary widely.
SR9009 stability depends on temperature, moisture, light, and solvent. Solid material is generally kept cool and dry, while solutions may require protection from repeated warming and cooling. Degradation can appear as color changes, precipitate, or new chromatographic peaks. Researchers should follow supplier instructions and their own stability data. Long-term storage conditions for human use have not been established because the compound lacks approved clinical formulation.
SR9009 is supplied as a solid research chemical, often in milligram quantities. Laboratories typically weigh it in a controlled environment because fine powders can disperse. Stock solutions are commonly prepared in dimethyl sulfoxide and stored in small aliquots to reduce freeze-thaw cycles. Personal protective equipment and chemical fume hoods are standard when handling unknown or potent compounds. These practices address laboratory safety rather than human use.
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.
SR9009 is a synthetic small molecule developed as an agonist of the nuclear receptors REV-ERBα (NR1D1) and REV-ERBβ (NR1D2). These receptors help regulate circadian rhythms and metabolic gene expression. In cell and animal studies, SR9009 alters transcription of genes involved in lipid metabolism, inflammation, and mitochondrial function. It is not an approved medicine, and its pharmacological profile in humans remains largely uncharacterized. The compound is frequently discussed in the context of circadian biology and metabolic research rather than clinical use.
| Property | Value | Notes |
|---|---|---|
| Synonyms | SR9009; Stenabolic | Stenabolic is an informal name |
| Common form | Crystalline powder | Supplied in milligram to gram quantities |
| Long-term storage | -20 °C, desiccated, protected from light | Reduces degradation |
| Detection technique | LC-MS/MS | Common in anti-doping and research analysis |
| Regulatory status | Prohibited in sport by WADA | Not approved for human therapeutic use |
Mechanistically, SR9009 binds the ligand-binding domain of REV-ERBα/β and enhances recruitment of corepressor complexes. This represses target genes rather than activating them. Because REV-ERB proteins normally compete with ROR proteins at shared response elements, the net effect depends on tissue and timing. Researchers use SR9009 to probe how nuclear receptor signaling links the clock to metabolism, inflammation, and muscle biology. Findings are largely preclinical, and the precise contribution of each receptor subtype remains under study.
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.
Pharmacokinetic data for SR9009 are limited in published literature. Some reports indicate low oral bioavailability and rapid clearance in animals, which complicates interpretation of exposure and effect. Researchers often use injected routes in preclinical work to achieve measurable systemic levels. Analytical studies rely on mass spectrometry to detect the parent compound and its metabolites. Questions about tissue distribution, active metabolites, and long-term consequences remain open. Species differences in metabolism can affect observed half-life and target engagement.
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 and metabolic gene expression. In laboratory experiments, SR9009 binds these receptors and alters transcription of genes involved in lipid handling, glucose metabolism, and mitochondrial function. It is not a naturally occurring compound and has no approved therapeutic use. Research interest stems from its ability to modify energy metabolism in cells and animal models.
Preclinical reports describe effects on exercise endurance, mitochondrial content, and lipid profiles in rodents, but these findings come from specific experimental conditions. Many studies use high doses or delivery methods that may not translate directly to human use. SR9009 has been reported to have low oral bioavailability and a short half-life, which complicates interpretation of oral dosing studies. It is not established as safe or effective for any indication. Literature discussions often separate its pharmacological mechanism from unverified claims made in fitness and supplement markets.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is not an approved medicine and has no established human therapeutic use. The compound appears in scientific literature as a tool for probing circadian and metabolic regulation. Online sellers often label it as a research chemical, sometimes using the nickname Stenabolic. Its chemical identity is distinct from selective androgen receptor modulators, stimulants, and peroxisome proliferator-activated receptor delta agonists. Researchers use it mainly in cell and animal experiments.
SR9009 binds REV-ERB receptors and alters their repressive activity on target genes. This action can change transcription of genes involved in lipid handling, glucose metabolism, and mitochondrial function. In rodent studies, treated animals have shown changes in muscle oxidative capacity and exercise performance, though effects vary by dose, duration, and model. The precise molecular steps connecting receptor binding to whole-body outcomes are still an active area of investigation. Findings in animals do not automatically translate to humans.
Because REV-ERB receptors are core clock components, SR9009 has been examined for effects on daily rhythms as well as metabolism. Research has explored whether the compound can shift or reinforce circadian gene expression in tissues such as liver and muscle. Some studies report improved metabolic markers in obese or diabetic mice, while others show context-dependent responses. Questions remain about which effects are direct, which are secondary to timing, and how they might differ across species.
SR9009 is a synthetic small molecule studied as an agonist of REV-ERB nuclear receptors. REV-ERB alpha and REV-ERB beta help regulate circadian rhythms and metabolic gene expression. In laboratory research, SR9009 has been used to probe how these receptors affect skeletal muscle, liver, and adipose tissue. The compound was identified in academic drug-discovery work and is often described in scientific literature by its chemical name and research code. It is not an approved medicine, and human clinical data remain limited or absent.
Recently, antibodies have been used to specifically visualize proteins, carbohydrates, and lipids. This process is called immunohistochemistry, or when the stain is a fluorescent molecule, immunofluorescence. This technique has greatly increased the ability to identify categories of cells under a microscope. Other advanced techniques, such as nonradioactive in situ hybridization, can be combined with immunochemistry to identify specific DNA or RNA molecules with fluorescent probes or tags that can be used for immunofluorescence and enzyme-linked fluorescence amplification (especially alkaline phosphatase and tyramide signal amplification). Fluorescence microscopy and confocal microscopy are used to detect fluorescent signals with good intracellular detail.
These elements can be then identified simply based on their elution position/time, using α-hydroxyisobutyrate solution (α-HIB), for example, as eluant. The 3+ actinides can also be separated via solvent extraction chromatography, using bis-(2-ethylhexyl) phosphoric acid (abbreviated as HDEHP) as the stationary organic phase, and nitric acid as the mobile aqueous phase. The actinide elution sequence is reversed from that of the cation-exchange resin column. The einsteinium separated by this method has the advantage to be free of organic complexing agent, as compared to the separation using a resin column.
== Iraq War (2003) == Kermani opposed the Iraq War. This opposition notwithstanding, Kermani viewed Saddam Hussein's regime as a terrible terrorist regime, the end of which he welcomed. In the arts section of the Süddeutsche Zeitung and in his book Strategie der Eskalation, Kermani wrote in 2005 that not only the U.S. but also Europe had failed in the Iraq War—and that the Old World was on the verge of repeating the same mistakes in the conflict with Iran. Kermani stated that the "American project to reorganize the Middle East" appeared to be far closer to the hearts of most Iranians today "than the Europeans' policy, which tends to present itself as altruistic". In the article, Kermani calls Europe's pretense that reform efforts still exist in Iran an act of self-deception. As evidence, he cites the suppression of the freedom of the press by Iran's rulers, the imprisonment of opposition figures, and the manipulation of parliamentary elections to restore a "conservative" majority. "War is the wrong means, but liberation is not the wrong end goal", Kermani notes.
National Accrediting Agency for Clinical Laboratory Sciences (NAACLS) is a US based educational accreditation organization that accredits clinical laboratory educational programs. NAACLS is accredited by the Council for Higher Education Accreditation (CHEA). NAACLS is the primary accrediting body for clinical laboratory programs in the US, though the Accrediting Bureau of Health Education Schools(ABHES) also accredits a handful of programs. Graduates of the ABHES are not eligible for the American Society for Clinical Pathology(ASCP) certification, but are eligible for the American Medical Technologists(AMT) certification. NAACLS has criticized the rise of non-accredited, on-the-job training (OJT) programs as undermining the laboratory profession.
The achievement of synthesizing ribonuclease A (with Bernd Gutte) was all the more significant in that it demonstrated that the linear sequence of amino acids joined in peptide bonds determined directly the protein tertiary structure, that is, information coded in one dimension can directly determine the three-dimensional structure of a molecule. SPPS has been expanded to include solid phase synthesis of nucleotides and saccharides.
Sources: en.wikipedia.org
== Interactions == Atomoxetine is a substrate for CYP2D6. Concurrent treatment with strong CYP2D6 inhibitors such as bupropion, fluoxetine, paroxetine, and quinidine has been shown to substantially increase atomoxetine exposure, as well as increase N-desmethylatomoxetine levels and decrease 4-hydroxyatomoxetine levels. Bupropion increased atomoxetine exposure by 5.1-fold and decreased 4-hydroxyatomoxetine-O-glucuronide exposure by 1.5-fold. Similarly, paroxetine increased atomoxetine steady-state peak levels by 3.5-fold, total exposure (over 12 hours) by 6.5-fold, and elimination half-life by 2.5-fold. Findings were analogous for fluoxetine and quinidine. CYP2D6 inhibitors do not appear to affect atomoxetine metabolism in CYP2D6 poor metabolizers. Dosage adjustment of atomoxetine may be necessary in people taking strong CYP2D6 inhibitors. Atomoxetine does not show clinically important inhibition or induction of cytochrome P450 (CYP450) enzymes including CYP1A2, CYP3A, CYP2D6, and CYP2C9. It did not affect the pharmacokinetics of the CYP2D6 substrate desipramine, whereas it increased exposure to the CYP3A4 substrate midazolam by only 15%. Atomoxetine is a moderate to potent inhibitor of P-glycoprotein. Other notable drug interactions include:
Proposals are published to give Members of the Senedd a 6% pay rise, taking the wages for a backbench MS to £76,380 in 2025–26, up from £72,057. 9 January – Former Prime Minister Liz Truss sends Keir Starmer a legal "cease and desist" letter demanding that he stop saying she "crashed the economy". Mick Lynch announces his retirement as general secretary of the National Union of Rail, Maritime and Transport Workers. 10 January – Local councils have until this date to decide whether to delay their participation in the May local elections. Ten Reform UK councillors in Derbyshire resign from the party in protest at Nigel Farage's leadership, saying that the party is being run in an "increasingly autocratic manner" and "has lost its sense of direction" since Farage took over as leader. In response, Farage says the members were put forward by a "rogue branch" of the party and that "none of them passed vetting". 13 January – Buckingham Palace confirms that King Charles III will travel to Auschwitz concentration camp to attend an event marking the 80th anniversary of its liberation on 27 January. Michael Ellam is appointed at the Cabinet Office's second permanent secretary, European Union and International Economic Affairs. As Chancellor Rachel Reeves faces mounting criticism over her handling of the economy against a backdrop of a falling pound and increases in government borrowing, Downing Street says she will remain in her role "for the whole of this Parliament".
Teva Pharmaceutical Industries Ltd. (also known as Teva Pharmaceuticals) is an Israeli multinational pharmaceutical company. Teva specializes primarily in generic drugs, but other business interests include branded-drugs, active pharmaceutical ingredients (APIs) and, to a lesser extent, contract manufacturing services and an out-licensing platform. Teva's primary branded products include Austedo (deutetrabenazine) which is used for the treatment of chorea associated with Huntington's disease and tardive dyskinesia; and Ajovy (fremanezumab), used for the preventive treatment of migraine in adults. Additional branded drugs sold by Teva include Copaxone, Bendeka and Treanda, all of which are primarily sold in the United States. Teva is listed on the Tel Aviv Stock Exchange and the New York Stock Exchange. Its manufacturing facilities are located in Israel, North America, Europe, Australia, and South America. The company is a member of the Pharmaceutical Research and Manufacturers of America (PhRMA). Teva Pharmaceuticals is the largest generic drug manufacturer in the world. Overall, Teva is the 26th largest pharmaceutical company in the world. Teva has a history of legal trouble in relation to collusion and price-fixing to inflate prices for drugs. In 2023, Teva paid the largest fine to date for a domestic antitrust cartel in relation to a criminal investigation by the US Department of Justice into the company's price-fixing. One of its early shareholders, after the company was quoted on the Tel Aviv exchange, was the late British press tycoon Robert Maxwell.
A chemical garden is a set of complex biological-looking structures formed by mixing inorganic chemicals. This experiment in chemistry is usually performed by adding metal salts, such as copper sulfate or cobalt(II) chloride, to an aqueous solution of sodium silicate (otherwise known as waterglass).This results in the growth of colorful, long, tubular, plant-like structures that form within minutes to hours. In addition to these, organic chemical gardens have also been demonstrated. The chemical garden was first observed and described by Johann Rudolf Glauber in the 17th century i.e., in 1646. In its original form, the chemical garden involved the introduction of ferrous chloride (FeCl2) crystals into a solution of potassium silicate (K2SiO3). However, they were not studied in detail until the 2000s. Chemical gardens have attracted increasing scientific interest because they can mimic geological and biological structures. Their nonequilibrium behaviour provides model systems for investigating self-organization and hypotheses about the emergence of life on earth and mars. Hydrothermal vent chimneys are regarded as natural analogues of chemical gardens and have been widely studied as models for studying origins of life. Chemical gardens are named for their plant-like appearance and growth.
Sources: en.wikipedia.org
The lungs of most reptiles have a single bronchus running down the centre, from which numerous branches reach out to individual pockets throughout the lungs. These pockets are similar to alveoli in mammals, but much larger and fewer in number. These give the lung a sponge-like texture. In tuataras, snakes, and some lizards, the lungs are simpler in structure, similar to that of typical amphibians. Snakes and limbless lizards typically possess only the right lung as a major respiratory organ; the left lung is greatly reduced, or even absent. Amphisbaenians, however, have the opposite arrangement, with a major left lung, and a reduced or absent right lung. Both crocodilians and monitor lizards have lungs similar to those of birds, providing a unidirectional airflow and even possessing air sacs. The now extinct pterosaurs have seemingly even further refined this type of lung, extending the airsacs into the wing membranes and, in the case of lonchodectids, Tupuxuara, and azhdarchoids, the hindlimbs. Reptilian lungs typically receive air via expansion and contraction of the ribs driven by axial muscles and buccal pumping. Crocodilians also rely on the hepatic piston method, in which the liver is pulled back by a muscle anchored to the pubic bone (part of the pelvis) called the diaphragmaticus, which in turn creates negative pressure in the crocodile's thoracic cavity, allowing air to be moved into the lungs by Boyle's law. Turtles, which are unable to move their ribs, instead use their forelimbs and pectoral girdle to force air in and out of the lungs.
Atkins, P. W. Galileo's Finger (Oxford University Press) ISBN 0-19-860941-8 Atkins, P. W. Atkins' Molecules (Cambridge University Press) ISBN 0-521-82397-8 Kean, Sam. The Disappearing Spoon – and Other True Tales from the Periodic Table (Black Swan) London, England, 2010 ISBN 978-0-552-77750-6 Levi, Primo The Periodic Table (Penguin Books) [1975] translated from the Italian by Raymond Rosenthal (1984) ISBN 978-0-14-139944-7 Stwertka, A. A Guide to the Elements (Oxford University Press) ISBN 0-19-515027-9 "Dictionary of the History of Ideas". Archived from the original on 10 March 2008. "Chemistry" . Encyclopædia Britannica. Vol. 6 (11th ed.). 1911. pp. 33–76. Introductory undergraduate textbooks
Dinosaurs are a diverse group of warmblooded reptiles of the clade Dinosauria. They existed through most of the Mesozoic era, first appearing early in the Triassic period. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya and their dominance continued throughout the Jurassic and Cretaceous periods. The fossil record shows that birds are feathered dinosaurs, having evolved from earlier theropods during the Late Jurassic epoch, and are the only dinosaur lineage known to have survived the Cretaceous–Paleogene extinction event approximately 66 mya. Dinosaurs can therefore be divided into avian dinosaurs—birds—and the extinct non-avian dinosaurs, which are all dinosaurs other than birds. Dinosaurs are varied from taxonomic, morphological and ecological standpoints. Birds, at over 11,000 living species, are among the most diverse groups of vertebrates. Using fossil evidence, paleontologists have identified over 900 distinct genera and more than 1,000 different species of non-avian dinosaurs. Dinosaurs are represented on every continent by both extant species (birds) and fossil remains. Through most of the 20th century, before birds were recognized as dinosaurs, most of the scientific community presumed dinosaurs to have been sluggish and cold-blooded. Most research conducted since the 1970s, however, has indicated that dinosaurs were active animals with elevated metabolisms and numerous adaptations for social interaction.
=== Data analysis === Mass spectrometry data analysis is specific to the type of experiment producing the data. General subdivisions of data are fundamental to understanding any data. Many mass spectrometers work in either negative ion mode or positive ion mode. It is very important to know whether the observed ions are negatively or positively charged. This is often important in determining the neutral mass but it also indicates something about the nature of the molecules. Different types of ion source result in different arrays of fragments produced from the original molecules. An electron ionization source produces many fragments and mostly single-charged (1-) radicals (odd number of electrons), whereas an electrospray source usually produces non-radical quasimolecular ions that are frequently multiply charged. Tandem mass spectrometry purposely produces fragment ions post-source and can drastically change the sort of data achieved by an experiment. Knowledge of the origin of a sample can provide insight into the component molecules of the sample and their fragmentations. A sample from a synthesis/manufacturing process will probably contain impurities chemically related to the target component. A crudely prepared biological sample will probably contain a certain amount of salt, which may form adducts with the analyte molecules in certain analyses. Results can also depend heavily on sample preparation and how it was run/introduced.
The Albany Parks and Recreation Department is the agency responsible for the Senior Center, the Periwinkle Creek Bike Path, and the other trails and parks within Albany. The department's recreation staff spends most of the summer organizing and running the city-organized events that occur at these parks such as River Rhythms, Summer Sounds, and the Northwest Art & Air Festival. The department is in charge of running and maintaining the Albany Community Pool and the Swanson Park Action Center which houses the Albany Cool! Pool. Albany's Parks and Recreation Department aims to make it where everyone within the city limits lives within 2 miles (3.2 km) of a park. Albany's Timber-Linn Memorial Park house the 63rd Blue Star veterans memorial in the state of Oregon. The memorial is dedicated to Linn County servicemen who lost their lives during all of the 20th century wars. The memorial lists the names of those from Linn County killed in action for each war fought throughout the 20th century. The memorial was sponsored by the Santiam District Garden Club and the Linn County Veterans Memorial Association. Albany's Timber-Linn Memorial Park also hosted the American Veterans Traveling Tribute, a replica of the Vietnam Memorial wall in Washington, D.C., in July 2009. The department also has an urban forestry program which involves the Legacy Forest at Lexington Park, that consists of commemorative tree planting designed to perpetuate the memory or work of individuals and organizations.
Sources: en.wikipedia.org
Laboratories commonly use liquid chromatography coupled with mass spectrometry to detect SR9009. The method can identify the compound and estimate concentration in a sample. Detection limits depend on the matrix and instrument.
Research-grade purity indicates a supplier's measured percentage of the intended compound. It does not guarantee safety, sterility, or suitability for human consumption. Buyers should request a certificate of analysis with chromatograms and test methods.
Sports regulators prohibit SR9009 because it is a non-approved substance with potential performance-altering effects. Its presence can be detected in anti-doping testing. Athletes are responsible for substances found in their samples.
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.