A practical reference on REV-ERB agonist: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
This page was last updated on 2025-10-14 and is reviewed periodically as new material appears.
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.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Not approved as a medicine in major jurisdictions | Sold as a research chemical; legal status varies |
| Anti-doping status | Prohibited by the World Anti-Doping Agency | Listed under non-approved substances or related category |
| Typical analytical method | LC-MS/MS | Used for detection and confirmation in biological samples |
| Storage temperature | −20 °C or lower for solid | Desiccated and protected from light |
| Common solution solvents | DMSO; ethanol | Aqueous solubility is limited |
In rodent studies, SR9009 has been reported to increase mitochondrial content in skeletal muscle and improve exercise endurance under some conditions. These findings led to popular descriptions such as an exercise mimetic, although that term oversimplifies the biology. Effects vary by dose, timing, tissue, and model. The compound's influence on circadian pathways means that time of administration can matter in experiments. Whether similar metabolic changes occur in humans remains largely unexplored in controlled published trials.
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.
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.
Analytical identification and purity assessment often use high-performance liquid chromatography with ultraviolet detection or mass spectrometry. Liquid chromatography–tandem mass spectrometry is used to detect and quantify SR9009 in biological matrices, including urine and blood, for anti-doping or pharmacokinetic studies. Nuclear magnetic resonance spectroscopy can confirm molecular structure. Stability depends on form and storage: the solid is generally more stable than solutions, and repeated freeze–thaw cycles may degrade samples. Purity is typically reported as a percentage from a certificate of analysis.
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.
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.
=== Resolution === Resolution of DKA is defined as the general improvement in the symptoms, such as the ability to tolerate oral nutrition and fluids, normalization of blood acidity (pH>7.3), and absence of ketones in the blood (<1 mmol/L) or urine. Once this has been achieved, insulin may be switched to the usual subcutaneously administered regimen, one hour after which the intravenous administration can be discontinued. In people with suspected ketosis-prone type 2 diabetes, determination of antibodies against glutamic acid decarboxylase and islet cells may aid in the decision whether to continue insulin administration long-term (if antibodies are detected), or whether to withdraw insulin and attempt treatment with oral medication as in type 2 diabetes. Generally speaking, routine measurement of C-peptide as a measure of insulin production is not recommended unless there is genuine doubt as to whether someone has type 1 or type 2 diabetes.
Courtship in teleosts plays a role in species recognition, strengthening pair bonds, spawning site position and gamete release synchronisation. This includes colour changes, sound production and visual displays (fin erection, rapid swimming, breaching), which is often done by the male. Courtship may be done by a female to overcome a territorial male that would otherwise drive her away.
He then reactivated Rhyme Syndicate and formed a deal with Priority Records for distribution. Priority released Home Invasion in the spring of 1993. The album peaked at No. 9 on Billboard magazine's Top R&B/Hip-Hop Albums and at No. 14 on the Billboard 200, spawning several singles including "Gotta Lotta Love", "I Ain't New Ta This" and "99 Problems" – which would later inspire Jay-Z to record a version with new lyrics in 2003. In 2003 he released the single "Beat of Life" with Sandra Nasić, Trigga tha Gambler and DJ Tomekk and placed in the German charts. Ice-T had also collaborated with certain other heavy metal bands during this time period. For the film Judgment Night, he did a duet with Slayer on the track "Disorder". In 1995, Ice-T made a guest performance on Forbidden by Black Sabbath. Another album of his, VI – Return of the Real, was released in 1996, followed by The Seventh Deadly Sin in 1999. His first rap album since 1999, Gangsta Rap, was released on October 31, 2006. The album's cover, which "shows [Ice-T] lying on his back in bed with his ravishing wife's ample posterior in full view and one of her legs coyly draped over his private parts", was considered to be too suggestive for most retailers, many of which were reluctant to stock the album. Some reviews of the album were unenthusiastic, as many had hoped for a return to the political raps of Ice-T's most successful albums.
Sources: en.wikipedia.org
=== Half-Life 3 === Half-Life 3 was in development between 2013 and 2014. Valve planned to use procedurally generated levels alongside a "crafted experience", similar to the Left 4 Dead series; the game would generate different routes through environments each time it was played. The team took new scans of the face of Frank Sheldon, whose likeness was used for the G-Man character in Half-Life 2. The Source 2 engine was still unfinished and the project was canceled early in development.
Vascular tissues are used to move hormones from one part of the plant to another; these include sieve tubes or phloem that move sugars from the leaves to the roots and flowers, and xylem that moves water and mineral solutes from the roots to the foliage. Not all plant cells respond to hormones, but those cells that do are programmed to respond at specific points in their growth cycle. The greatest effects occur at specific stages during the cell's life, with diminished effects occurring before or after this period. Plants need hormones at very specific times during plant growth and at specific locations. They also need to disengage the effects that hormones have when they are no longer needed. The production of hormones occurs very often at sites of active growth within the meristems, before cells have fully differentiated. After production, they are sometimes moved to other parts of the plant, where they cause an immediate effect; or they can be stored in cells to be released later. Plants use different pathways to regulate internal hormone quantities and moderate their effects; they can regulate the amount of chemicals used to biosynthesize hormones. They can store them in cells, inactivate them, or cannibalise already-formed hormones by conjugating them with carbohydrates, amino acids, or peptides. Plants can also break down hormones chemically, effectively destroying them. Plant hormones frequently regulate the concentrations of other plant hormones. Plants also move hormones around the plant diluting their concentrations.
The United Nations was FDR's highest postwar priority. He insisted on full coordination with the Republican leadership. He made sure that leading Republicans were on board, especially Senators Arthur Vandenberg of Michigan, and Warren Austin of Vermont. In a broad sense, Roosevelt believed that the UN could solve the minor problems and provide the chief mechanism to resolve any major issues that arose among the great powers, all of whom would have a veto. Roosevelt was especially interested in international protection of human rights, and in this area his wife played a major role as well. The Dumbarton Oaks Conference convened in August 1944 to discuss plans for the postwar United Nations with delegations from the United States, the United Kingdom, the Soviet Union, and China. US President Franklin D. Roosevelt considered his most important legacy the creation of the United Nations, making a permanent organization out of the wartime Alliance of the same name. He was the chief promoter of the United Nations idea. The Big Four were the only four sponsoring countries of the San Francisco Conference of 1945 and their heads of the delegations took turns as chairman of the plenary meetings. During this conference, the Big Four and their allies signed the Charter of the United Nations.
Synapse and dendritic spine growth may be disrupted in autism due to impaired neurexin–neuroligin cell-adhesion signaling or dysregulated synthesis of synaptic proteins. Disrupted synaptic development may also contribute to epilepsy, which may explain why the two conditions are associated. Studies have shown that imbalances between excitation and inhibition (EI) in brain circuitry is the primary cause of synaptic dysfunction in autism. Major Histocompatibility Class I (MHCI) antigens and inflammatory cytokines may be responsible for regulating the EI balance by impacting synapse development and plasticity. Neurotransmitters such as serotonin, dopamine, and glutamate have been implicated in autism. The dysregulation of neurotransmitters and neuropeptides can contribute to pathophysiology and symptoms of autism. Fragile X, the most common genetic cause of autism, is linked to dysfunction of group I metabotropic glutamate receptors (mGluR), leading some to consider their potential role in autism.
Sources: en.wikipedia.org
He called the bill "crony capitalism" and set several conditions for acceptance of the bill: "Companies must agree to issue warrants or equity stakes to the federal government; they must commit to not buying back their own stock, outsourcing American jobs overseas or repealing existing collective bargaining agreements; and they must remain neutral in any union organizing efforts". In April 2023, Sanders endorsed Biden in the 2024 United States presidential election, and after Biden withdrew from the race, Sanders endorsed Harris for president at the Democratic National Convention. Sanders attempted to appeal to pro-Palestinian critics of Harris by saying, "I promise you, after Kamala wins, we will together do everything that we can to change US policy toward Netanyahu", and emphasizing Donald Trump's policies on climate change, minimum wage, and tax cuts for the wealthy.
== Research in cancer == Deoxycholate and other secondary bile acids cause DNA damage. Secondary bile acids increase intracellular production of reactive oxygen and reactive nitrogen species resulting in increased oxidative stress and DNA damage. As shown in the figure below, deoxycholate added to the diet of mice increased the level of 8-oxo-dG, an oxidative DNA damage, in the colonic epithelium of mice. When the level of deoxycholate-induced DNA damage is high, DNA repair enzymes that ordinarily reverse DNA damage may not be able to keep up. DNA damage has frequently been proposed as a major cause of cancer. DNA damage can give rise to cancer by causing mutations. When deoxycholate was added to the food of mice so that their feces contained deoxycholate at about the same level present in feces of human on a high fat diet, 45% to 56% of the mice developed colon cancer over the next 10 months, while none of the mice on a diet without deoxycholate developed cancer. Thus, exposure of the colon to deoxycholate may cause cancer in mice. However, this same study reported that, when chlorogenic acid was added to the diet alongside deoxycholate, only 18% of the mice developed colon cancer. Chlorogenic acid is a component of common foods and beverages; coffee contains an average of 53.8 mg chlorogenic acid per 100 mL. Therefore, to consume the level of chlorogenic acid used in the study, a human on a "standard" 2000-calorie daily diet (416 g/d; 250 g carbs, 100 g protein, 66 g fat) would need to consume roughly 55 mL of coffee each day, or just under 2 fluid ounces.
Polymers for which UCST relies on non-ionic interactions are very sensitive to ionic contamination. Small amounts of ionic groups may suppress phase separation in pure water. The UCST is dependent on the molecular mass of the polymer. For the LCST this is not necessarily the case, as shown for poly(N-isopropylacrylamide).
== List of genera and microscopy features == Many genera contain pathogenic bacterial species. They often possess characteristics that help to classify and organize them into groups. The following is a partial listing.
{\displaystyle {\begin{aligned}u_{x}&={\frac {4{\sqrt {2}}}{3{\sqrt {3}}}}\,U_{0}\left[\,\sin \left(kx-{\frac {\pi }{3}}\right)\cos \left(ky+{\frac {\pi }{3}}\right)\sin \left(kz+{\frac {\pi }{2}}\right)-\cos \left(kz-{\frac {\pi }{3}}\right)\sin \left(kx+{\frac {\pi }{3}}\right)\sin \left(ky+{\frac {\pi }{2}}\right)\,\right]e^{-3\nu k^{2}t}\\u_{y}&={\frac {4{\sqrt {2}}}{3{\sqrt {3}}}}\,U_{0}\left[\,\sin \left(ky-{\frac {\pi }{3}}\right)\cos \left(kz+{\frac {\pi }{3}}\right)\sin \left(kx+{\frac {\pi }{2}}\right)-\cos \left(kx-{\frac {\pi }{3}}\right)\sin \left(ky+{\frac {\pi }{3}}\right)\sin \left(kz+{\frac {\pi }{2}}\right)\,\right]e^{-3\nu k^{2}t}\\u_{z}&={\frac {4{\sqrt {2}}}{3{\sqrt {3}}}}\,U_{0}\left[\,\sin \left(kz-{\frac {\pi }{3}}\right)\cos \left(kx+{\frac {\pi }{3}}\right)\sin \left(ky+{\frac {\pi }{2}}\right)-\cos \left(ky-{\frac {\pi }{3}}\right)\sin \left(kz+{\frac {\pi }{3}}\right)\sin \left(kx+{\frac {\pi }{2}}\right)\,\right]e^{-3\nu k^{2}t}\end{aligned}}}
Sources: en.wikipedia.org
Its legal status depends on the country and intended use. It is not an approved medicine in major jurisdictions. In sport, it is prohibited by anti-doping rules.
Laboratories typically use LC-MS/MS to detect SR9009 and related compounds in urine or blood. The method is sensitive but depends on sample collection timing. Confirmatory analysis follows quality-control procedures.
Solid material is generally kept cold, dry, and protected from light. Solutions are often stored in sealed containers at low temperature. Stability beyond recommended periods is not well documented.
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.