The short version of REV-ERB fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2025-12-04 and is reviewed periodically as new material appears.
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.
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.
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.
Regulatory agencies have not approved SR9009 for human therapeutic use. It is typically sold as a research chemical with labels stating that it is not for human consumption. The World Anti-Doping Agency prohibits the substance in sport, generally under the category of non-approved substances. Customs and national laws may restrict importation, sale, or possession. Product quality and legal status can vary by country and vendor, and therapeutic claims are not permitted in regulated advertising because the compound lacks approval.
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.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white powder | Common supplier description |
| Solubility | Soluble in DMSO and ethanol | Low solubility in water |
| Typical storage | −20 °C, desiccated, dark | For research samples |
| Analytical method | LC-MS/MS | Used for detection and quantification |
| Regulatory status | Prohibited in sport | WADA metabolic modulator class |
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.
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.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ, also called NR1D1 and NR1D2. These receptors help regulate circadian rhythms and metabolic gene programs. The compound was developed for laboratory research, not as an approved therapeutic. Its identity is distinct from steroid hormones and selective androgen receptor modulators. Scientific interest centers on how REV-ERB activation changes gene expression in cells and animal models.
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.
=== Spread of Infection === The apical foramen may serve as a pathway for the spread of infection from the root canal system into the surrounding periapical tissues. When the dental pulp becomes necrotic due to caries or trauma, bacteria may extend through the apical foramen into the periodontal ligament and alveolar bone, potentially triggering apical periodontitis. If left untreated, this development may result in the formation of periapical lesions and abscesses
Loss of consciousness can occur in myocardial infarctions due to inadequate blood flow to the brain and cardiogenic shock, and sudden death, frequently due to the development of ventricular fibrillation. When the brain was without oxygen for too long due to a myocardial infarction, coma and persistent vegetative state can occur. Cardiac arrest, and atypical symptoms such as palpitations, occur more frequently in females, the elderly, those with diabetes, in people who have just had surgery, and in critically ill patients.
== Summary == Strauss, a novelist, recounts how his life was profoundly altered when a car he was driving struck and killed a high school classmate. She was on a bicycle that swerved in front of his car. Although it was determined Strauss could in no way have avoided the accident, the book details his attempts, over half his life, to come to terms with his feelings of responsibility.
Sources: en.wikipedia.org
== Work == Development of dedicated machinery for insulin extraction and purification at the Zoophysiology Laboratory workshop. Design and implementation of early insulin delivery technologies (the "Novo Syringe" for self-injection). Co-development of Insulin Novo, marketed by Novo Terapeutisk in the mid-1920s.
== Cell types and locations == The spleen is the second largest unit of the mononuclear phagocyte system. The monocyte is formed in the bone marrow and transported by the blood; it migrates into the tissues, where it transforms into a histiocyte or a macrophage. Macrophages are diffusely scattered in the connective tissue and in liver (Kupffer cells), spleen and lymph nodes (sinus histiocytes), lungs (alveolar macrophages), and central nervous system (microglia). The half-life of blood monocytes is about 1 day, whereas the life span of tissue macrophages is several months or years. The mononuclear phagocyte system is part of both humoral and cell-mediated immunity. The mononuclear phagocyte system has an important role in defense against microorganisms, including mycobacteria, fungi, bacteria, protozoa, and viruses. Macrophages remove senescent erythrocytes, leukocytes, and megakaryocytes by phagocytosis and digestion.
The evidence for brain-derived neurotrophic factor (BDNF) in mediating some of the neurobiological effects of physical exercise was noted in one review which hypothesized that increased BDNF signaling is responsible for the antidepressant effect. A meta-analysis of 15 studies published in 2022 suggested a curvilinear dose-response relationship between exercise and depression risk, with low levels of exercise showing the best dose-response.
A member of parliament refers to the elected members of the federal Bundestag at the Reichstag building in Berlin. In German a member is called Mitglied des Bundestages (member of the Federal Diet) or officially Mitglied des Deutschen Bundestages (member of the German Federal Diet), abbreviated MdB and attached . Unofficially the term Abgeordneter (lit. 'delegate', i.e. of a certain electorate) is also common (abbreviated Abg., never follows the name but precedes it). In accordance with article 38 of the Basic Law for the Federal Republic of Germany, which is the German constitution, "[m]embers of the German Bundestag shall be elected in general, direct, free, equal, and secret elections. They shall be representatives of the whole people, not bound by orders or instructions, and responsible only to their conscience." An important though not constitutionally required feature of German parliamentarianism is a slightly modified proportional representation. The 16 federal states of Germany (Länder) are represented by the Bundesrat at the former Prussian House of Lords, whose members are representatives of the respective Länder's governments and not directly elected by the people.
Sources: en.wikipedia.org
=== Orthologs === The ortholog space of C3orf62 is fairly narrow, with the majority of orthologs found in mammals. A small fraction of orthologs have also been found in the following classes: Reptila, Sarcopterygii, and Actinoptergii. The groupings of nearly all Mammalia ortholog sequences of C3orf62 are as follows: E-value: 2e-94 to 1e-169; similarity 56-84%. Mammals in this group consist largely of primates but also include the following orders: Perissodactyla, Rodentia, Carnivora, Proboscidea, Cetartiodactyla, Cingulata, Artiodactyla, Eulipotyphla, Diselphimorphia, and Afrosoricida. More distantly related ortholog sequences of C3orf62 include organisms from classes Reptilia, Sarcopterygii, and Actinopterygii ranging from an E-value of 8e-10 to 3e-59 with similarity of 24-39%. Organisms in this grouping consist of Testudines, Coelacanthiformes, Squamata, and Osteoglossiformes orders. No ortholog sequences of C3orf62 were found for the following life forms: Bacteria, archaea, protist, plant, fungus, trichoplax, invertebrate, amphibian, or bird.
=== Restructuring and acquisition by Embracer Group (2015–2024) === Gearbox established Gearbox Publishing in 2015, first announced to the public in December 2016, as to publish third-party games, starting with the remastered version of Bulletstorm from People Can Fly. Pitchford said that it wanted to start expanding into other areas of capital growth beyond games that Gearbox was traditionally known for, and planned to use Gearbox Publishing as a starting point. Later, in May 2019, Gearbox established The Gearbox Entertainment Company, Inc. (Gearbox Entertainment) as a parent company for both Gearbox Software and Gearbox Publishing. Co-founder Landon Montgomery, who had left the company around 2007, died on March 25, 2020. In April 2021, Gearbox Entertainment was wholly acquired by the Embracer Group for precisely $363 million rising to $1.378 billion should it reach specific operational targets. This addition would be the company's seventh major publishing group. Pitchford stated that while it was looking to raise capital from 2016, it came to meet with Embracer, and saw that its decentralized studio model would work well for Gearbox. 2K remained on Gearbox's board and continued to publish the Borderlands series. Gearbox Entertainment opened a second Canadian studio, Gearbox Studio Montreal, in August 2021, to support 250 new staff, bringing the total size of Gearbox to around 850 employees.
Both lepa1 and lepa2 have two characteristic cysteine residues which predict the formation of a disulfide bond in Lep, which is a pre-equisite for this 3D configuration and bioactivity of human LEP. The models suggest that the bonding of lepa2 might be different from lepa1. There are several differences between the 3D structures of lepa1 and lepa2; e.g. α-helix 5 is considerable shorter in lepa1 than lepa2. Furthermore, α-helix 1 for lepa2 appears to be split by a short-disordered region, and may therefore have a poorer affinity. However, considering that it is a predicted model based upon the structure mask of human LEP, the significance of these putative conformational adjustments remains to be tested. The importance of the conserved tertiary structure of Lep is most likely explained by requirements for specific LepR-binding affinity and is constrained by the structure of the receptor-binding pocket. This might also explain some of the results from studies on teleost using heterologous mammalian Lep. E.g. treatment with the mammalian hormone caused an anorexic effect in goldfish (Carassius auratus) and green sunfish (Lepomis cyanellus), but not in Coho salmon (Oncorhynchus kisutch), channel catfish (Ictalurus punctatus) and green sunfish. These contradicting results have been explained by the relatively large differences in amino acid sequences observed between mammals and fish. Rønnestad and colleagues recently detected five isoforms of the leptin receptor (lepr) that have differences in 3'-end of the mRNA sequence.
At the end of its 2013 fiscal year, Burger King was the second largest chain of hamburger fast food restaurants in terms of global locations, behind industry bellwether McDonald's, which had 32,400 locations. At the end of 2014, Burger King ranked fourth among US food chains in terms of US sales, behind McDonald's, Starbucks, and Subway. Burger King now has over 12,000 stores worldwide. In January 2024, Restaurant Brands International, the owner of the brand, announced it would purchase the largest franchisee of the chain, Carrols Restaurant Group, for around $1 billion. At the time of the announcement, Carrols had 1,022 Burger King locations (along with 60 Popeyes locations). The goal was to remodel 600 of the restaurants, then sell them back to franchisees over five to seven years. The move represented a departure from the existing model of largely franchising locations.
==== Combinations of medications ==== A 2018 research review (16 studies included) found there was very little evidence to support or refute that combinations of medications were more effective than single medications for reducing fibromyalgia pain.
Sources: en.wikipedia.org
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.
Detection commonly uses liquid chromatography–tandem mass spectrometry. This method can identify the compound in urine or blood at low concentrations.
Typical guidance is −20 °C, dry, and protected from light. Solutions should be aliquoted and limited freeze–thaw cycles should be used.
Legality depends on the country and the intended use. In many places it is not approved as a medicine and may be sold only as a research chemical. Importation or possession can be restricted, and sports organizations prohibit it.