The short version of NR1D2 fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2025-10-19. Anything still debated is marked as such rather than presented as settled.
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.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Chemical class | Synthetic small-molecule REV-ERB agonist | Not a hormone or natural product |
| Primary targets | REV-ERBα and REV-ERBβ | Nuclear receptors involved in circadian and metabolic regulation |
| Appearance | White to off-white solid | Typical for purified research samples |
| Solubility | Soluble in DMSO and ethanol; low water solubility | Laboratory solubility depends on solvent and purity |
| Common synonyms | SR9009; Stenabolic | Stenabolic is a colloquial name, not a formal chemical name |
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.
Laboratory samples of SR9009 are typically supplied as a white to off-white powder. The compound dissolves readily in organic solvents such as dimethyl sulfoxide and ethanol, while its solubility in water is low. Because of this solubility profile, researchers often prepare concentrated stock solutions in an organic solvent before diluting them into aqueous assay buffers. Light exposure, moisture, and repeated freeze-thaw cycles can degrade many small molecules, so handling procedures usually aim to minimize these factors. Purity is commonly checked before use.
Storage conditions for research-grade SR9009 generally involve a freezer at approximately minus twenty degrees Celsius, sometimes lower for long-term preservation. Containers should remain tightly closed and protected from light. Desiccants may be used to limit moisture uptake. Solutions are often stored in aliquots to avoid repeated warming and cooling. Stability data for the compound under various conditions are limited, so laboratories typically follow supplier recommendations and verify performance through periodic analytical checks rather than assuming indefinite stability.
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.
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.
Preclinical reports have linked SR9009 to improved endurance and altered energy expenditure in rodents. Such findings have prompted interest in whether REV-ERB activation can influence skeletal muscle metabolism. However, the reported effects depend on dose, route, and experimental model, and replication across laboratories is limited. Human trials have not established comparable outcomes, so claims about exercise performance remain speculative. The absence of controlled human data is a central limitation in interpreting these observations.
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.
=== Coup in Cambodia === In the spring of 1970 Kissinger was under immense strain as several of his aides were planning to resign to protest the upcoming U.S invasion of Cambodia, and his liberal friends from Harvard were pressuring him to resign as well while Nixon was all for more belligerence. Much of Kissinger's staff were deeply opposed to the invasion of Cambodia. Kissinger asked one of his aides, William Watts, to be in charge of National Security Council staffing for the coming invasion. Watts refused, saying he was opposed to the invasion on moral grounds, causing Kissinger to shout: "Your views represent the cowardice of the Eastern Establishment!" Watts resigned on the spot. As Watts was writing his resignation letter, Kissinger's deputy, Alexander Haig, appeared to tell him on behalf of Kissinger: "You've just had an order from your commander in chief. You can't quit". Watts replied: "Fuck you Al! I just did". Kissinger received a phone call from Nixon and his best friend, Charles "Bebe" Rebozo, who both sounded very drunk; Nixon began the call and then handed the phone to Rebozo who said: "The President wants you to know if this doesn't work, Henry, it's your ass". On 30 April 1970, the United States invaded Cambodia, which Nixon announced in a television address that Kissinger contemptuously called "vintage Nixon" because of his overblown rhetoric. At the time, Nixon was seen as recklessly escalating the war, and in early May 1970, the largest protests ever against the Vietnam War took place.
The transcription factor p63, which prevents epidermal stem cells from differentiating into keratinocytes. Mutations in the p63 DNA-binding domain are associated with ectrodactyly, ectodermal dysplasia, and cleft lip/palate (EEC) syndrome. The transcriptome of p63 mutant keratinocytes deviated from the normal epidermal cell identity. Vitamin A and its analogues. Epidermal growth factor. Transforming growth factor alpha. Cholera toxin.
== Structure and role == The pancreas serves multiple roles within mammalian organisms. It plays a role in the digestive system and the endocrine system making it an organ and a very important gland. PP cells tend to located in the pancreatic islets, and are one of the rarer pancreatic cell types. Some small clusters may also be found surrounded by exocrine pancreas. They tend to be located in the duodenal part of the pancreas more medially. Given their location in pancreatic islets along with their low population, they are able to respond efficiently to changes in blood sugar, nerve impulses, and chemical signaling through gap junctions or cellular signaling. PP cells show the highest concentration at the head of the pancreas. PP cells play an important role when it comes to the regulation of plasma glucose as they help to synthesize and release pancreatic polypeptide (PP). As PP cells secrete more pancreatic polypeptide, it has been shown to have a negative effect on insulin secretion giving it anorexic effects on intestinal functionality. These cells have been shown to inhibit functions in the gut and decrease intestinal motor activity as well. In other words, as the secretion of pancreatic polypeptide increases, the secretion of insulin, a peptide hormone, starts to decrease. Pancreatic polypeptide also works to regulate glycogen levels and the amount of secreted substances from gastrointestinal cells and tissue. Within PP cells and its nucleus is the cellular DNA that allows for different proteins to be made that go on to play a role in cellular functions.
A power supply issue at Thames Water's west London treatment works leaves thousands of properties in south west London without water or with low water pressure. 14 September – Health Secretary Steve Barclay gives his backing to the introduction of Martha's Rule to hospitals in England, where patients are made aware that they are entitled to a second opinion. NHS England will also begin implementing the rule. The Metropolitan Police have paid damages to two women who were arrested at a vigil for Sarah Everard, who was murdered by a serving police officer in March 2021. 15 September – Three people appear in court charged with the murder of Sara Sharif, and are remanded in custody. The Metropolitan Police apologises and agrees to pay compensation to Alfie Meadows, who sustained brain injuries after being hit with a baton by a police officer during the 2010 student protests. 16 September – A man is arrested in the Royal Mews near Buckingham Palace following reports of someone climbing a wall in the area; he is detained under the Serious Organised Crime and Police Act on suspicion of trespassing. 17 September – Heavy rain causes flash flooding in Kenton, Devon. 19 September – The UK government announces that commissioners will be appointed to oversee the running of Birmingham City Council following its recent financial troubles. 21 September – During a hearing at the Old Bailey, Daniel Khalife pleads not guilty to escaping from Wandsworth Prison. 22 September – Surrey Police release new pictures of Sara Sharif as they appeal for more information about her.
1854: British conchologist and geologist Mary Horner Lyell is most well known for her scientific work in 1854, where she studied her collection of land snails from the Canary Islands. She was married to the notable British geologist Charles Lyell and assisted him in his scientific work. It is believed by historians that she likely made major contributions to her husband's work. 1854–1855: English social reformer and statistician, and the founder of modern nursing Florence Nightingale organized care for wounded soldiers during the Crimean War. Her pie charts clearly showed that most deaths resulted from disease rather than battle wounds or "other causes," which led the general public to demand improved sanitation at field hospitals. 1855: Working with her father, Welsh astronomer and photographer Thereza Dillwyn Llewelyn produced some of the earliest photographs of the moon. 1856: American atmospheric scientist Eunice Newton Foote presented her paper "Circumstances affecting the heat of the sun's rays" at an annual meeting of the American Association for the Advancement of Sciences. She was an early researcher of the greenhouse effect. 1862: Belgian botanist Marie-Anne Libert became the first woman to join the Royal Botanical Society of Belgium. She was named an honorary member. 1863: German naturalist Amalie Dietrich arrived in Australia to collect plant, animal and anthropological specimens for the German Godeffroy Museum.
Sources: en.wikipedia.org
Unable to afford the TCB Band, the group featured guitarists Jock Bartley and Larry Coryell, Neil Flanz on pedal steel, bassist Kyle Tullis, and drummer N. D. Smart. The touring party also included Parsons' new wife, Gretchen Parsons, who was envious of Harris and her young daughter. Coordinating the spectacle as road manager was Phil Kaufman, who had served time with Charles Manson on Terminal Island but who ensured that the performer stayed clear of drugs and limited his alcohol intake during shows. At first, the band was under-rehearsed and played poorly; however, they improved with steady gigging and received rapturous responses at several counter-cultural venues, including Armadillo World Headquarters in Austin, Max's Kansas City in New York City, and Liberty Hall in Houston, where Neil Young and Linda Ronstadt sat in for a filmed performance. Nevertheless, the tour failed to galvanize sales of GP, which never charted in the Billboard 200. For his next and final album, 1974's posthumously released Grievous Angel, Parsons used Harris and members of the TCB Band. The record received more enthusiastic reviews than GP. Although Parsons only contributed two new songs to the album ("In My Hour of Darkness" and "Return of the Grievous Angel"), he was reportedly enthusiastic with his new sound and seemed to have finally adopted a diligent mindset to his musical career, limiting his intake of alcohol and opiates during most of the sessions. Grievous Angel peaked at number 195 on the Billboard chart.
Sweat is mostly water. A microfluidic model of the eccrine sweat gland provides details on what solutes partition into sweat, their mechanisms of partitioning, and their fluidic transport to the skin surface. Dissolved in the water are trace amounts of minerals, lactic acid, and urea. Although the mineral content varies, some measured concentrations are: sodium (0.9 gram/litre), potassium (0.2 g/L), calcium (0.015 g/L), and magnesium (0.0013 g/L). Relative to the plasma and extracellular fluid, the concentration of Na+ ions is much lower in sweat (≈40 mM in sweat versus ≈150 mM in plasma and extracellular fluid). Initially, within eccrine glands sweat has a high concentration of Na+ ions. In the sweat ducts, the Na+ ions are re-absorbed into tissue by epithelial sodium channels (ENaC) that are located on the apical membrane of epithelial cells that form the duct (see Fig. 9 of the reference). Many other trace elements are also excreted in sweat, again an indication of their concentration is (although measurements can vary fifteenfold) zinc (0.4 milligrams/litre), copper (0.3–0.8 mg/L), iron (1 mg/L), chromium (0.1 mg/L), nickel (0.05 mg/L), and lead (0.05 mg/L). Probably many other less-abundant trace minerals leave the body through sweating with correspondingly lower concentrations. Some exogenous organic compounds make their way into sweat as exemplified by an unidentified odiferous "maple syrup" scented compound in several of the species in the mushroom genus Lactarius. In humans, sweat is hypoosmotic relative to plasma (i.e. less concentrated).
An exchange of ions (charged atoms) across the nerve cell membrane sends a depolarizing current towards the end of the nerve cell (cell terminus). When the depolarizing current arrives at the nerve cell terminus, the neurotransmitter acetylcholine (ACh), which is held in vesicles, is released into the space between the two nerves (synapse). It moves across the synapse to the postsynaptic receptors. ACh binds to the receptors and transfers the signal to the target cell, and after a short time, it's destroyed by acetylcholinesterase.
=== Production and secretion === Secretin is synthesized in cytoplasmic secretory granules of S cells, which are found mainly in the mucosa of the duodenum, and in smaller numbers in the jejunum of the small intestine. Secretin is released into circulation and/or intestinal lumen in response to low duodenal pH that ranges between 2 and 4.5 depending on species; the acidity is due to hydrochloric acid in the chyme that enters the duodenum from the stomach via the pyloric sphincter. Also, the secretion of secretin is increased by the products of protein digestion bathing the mucosa of the upper small intestine. Secretin release is inhibited by H2 antagonists, which reduce gastric acid secretion. As a result, if the pH in the duodenum increases above 4.5, secretin cannot be released.
Sources: en.wikipedia.org
===== Fifth generation ===== Since the mid-1990s, the fifth generation of silicone-gel breast implant is made of a high-strength, highly cohesive silicone gel that mostly eliminates the occurrences of filler leakage ("silicone gel bleed") and of the migration of the silicone filler from the implant pocket to elsewhere in the woman's body. These implants are commonly referred to as "gummy bear breast implants" for their firm, pliant consistency, which is similar to gummy candies. The studies Experience with Anatomical Soft Cohesive Silicone gel Prosthesis in Cosmetic and Reconstructive Breast Implant Surgery (2004) and Cohesive Silicone gel Breast Implants in Aesthetic and Reconstructive Breast Surgery (2005) reported low incidence-rates of capsular contracture and of device-shell rupture; and greater rates of improved medical-safety and technical-efficacy than that of early generation breast implant devices.
In the summer of 1793 the sans-culottes, the Parisian enragés especially, accused even the most radical Jacobins of being too tolerant of greed and insufficiently universalist. From this far-left point of view, all Jacobins were at fault because all of them tolerated existing civil life and social structures. The sans-culottes also populated the ranks of paramilitary forces charged with physically enforcing the policies and legislation of the revolutionary government, a task that commonly included violence and the carrying out of executions against perceived enemies of the revolution. During the peak of their influence, the sans-culottes were seen as the truest and most authentic sons of the French Revolution, held up as living representations of the revolutionary spirit. During the height of revolutionary fervor, such as during the Reign of Terror when it was dangerous to be associated with anything counter-revolutionary, even public functionaries and officials actually from middle or upper-class backgrounds adopted the clothing and label of the sans-culottes as a demonstration of solidarity with the working class and patriotism for the new French Republic. But by early 1794, as the bourgeois and middle-class elements of the revolution began to gain more political influence, the fervent working-class radicalism of the sans-culottes rapidly began falling out of favour within the National Convention.
=== Downworlders === Hypatia Vex — a warlock who owns the Hell Ruelle. Malcolm Fade — High Warlock of London, succeeding Ragnor Fell. Magnus Bane — a powerful warlock, and old friend of Will Herondale's and Tessa Gray's.
Sources: en.wikipedia.org
It is a synthetic research compound that activates REV-ERB nuclear receptors. It is not an approved drug or dietary supplement. Most information comes from cell and animal studies.
It binds REV-ERBα and REV-ERBβ and changes transcription of metabolic genes. This can affect circadian rhythm, lipid use, and mitochondrial function. The full downstream effects are still under study.
No. Some rodent studies show increased endurance, but controlled human trials are lacking. Claims about human performance are not established by published evidence.
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.