The short version of REV-ERB agonist fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-04-18 and is reviewed periodically as new material appears.
Detection in biological samples can be complicated by rapid metabolism and low circulating concentrations. Some studies report phase I and phase II metabolites, and analytical methods may need to target those species in addition to the parent compound. Immunoassays are not broadly available, so mass spectrometry remains the main confirmatory approach. For anti-doping testing, laboratories look for SR9009 and its metabolites using validated LC-MS methods. Open questions include how long metabolites remain detectable and how different routes of administration alter detection windows.
In laboratory settings, SR9009 is typically characterized by liquid chromatography–mass spectrometry (LC-MS) or high-performance liquid chromatography with ultraviolet detection (HPLC-UV). These methods can confirm identity and estimate purity, but they require reference standards for accurate quantification. Because SR9009 is not a licensed pharmaceutical, no harmonized pharmacopeial monograph exists. Laboratories often validate in-house methods for matrices such as plasma, urine, or cell culture media. Sample preparation may involve protein precipitation or liquid-liquid extraction before analysis.
Physicochemical behavior influences handling. SR9009 is described as a solid with limited aqueous solubility, so organic solvents such as dimethyl sulfoxide or ethanol are common in research stock solutions. Aqueous dilution can produce precipitates if the organic content is too low. Light, heat, and repeated freeze-thaw cycles may affect stability. Storage recommendations usually specify a desiccated freezer environment protected from light, but exact stability data depend on the formulation and matrix.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Appearance | Off-white to pale yellow solid | Visual description varies with purity and source |
| Solubility | Soluble in DMSO and ethanol; poorly soluble in water | Organic stock solutions are common in research |
| Typical storage | -20 °C, desiccated, protected from light | Avoid repeated freeze-thaw cycles |
| Typical analytical method | LC-MS or HPLC-UV | Reference standards are needed for quantification |
| Molar mass | Approximately 437.9 g/mol | Calculated from the reported free-base formula |
For long-term storage, SR9009 is typically kept as a solid at low temperature, protected from moisture and light. Desiccated conditions limit hydrolysis, while opaque containers reduce photochemical breakdown. Solutions are less stable than solids and are often stored frozen in aliquots to avoid repeated freeze-thaw cycles. Stability data are not standardized across all suppliers, so users should rely on certificate-of-analysis information when available. Degradation may appear as color change, precipitate, or decreased chromatographic purity.
Laboratory identification of SR9009 typically relies on chromatographic separation coupled to mass spectrometry, often with ultraviolet detection as a secondary check. Nuclear magnetic resonance spectroscopy can confirm molecular structure when a reference standard is available. Because many suppliers sell the compound as a research chemical, independent identity testing is important for experimental reproducibility. A single retention time is not sufficient proof of identity, especially when related compounds may be present. Purity assessments usually report a percentage based on area normalization.
SR9009 is generally described as poorly soluble in water and more soluble in organic solvents such as dimethyl sulfoxide and ethanol. Stock solutions are commonly prepared in an organic solvent before dilution into an aqueous buffer or vehicle. Precipitation can occur if the organic fraction is reduced too quickly or if the final concentration exceeds the compound's solubility limit. Sonication or gentle warming may aid dissolution in some protocols, but excessive heat can promote degradation. Container material and pH can also influence observed solubility.
Identity and purity testing for SR9009 commonly uses liquid chromatography coupled with tandem mass spectrometry. This method separates the compound from matrix components and detects it by mass-to-charge transitions, providing sensitive and specific confirmation. Nuclear magnetic resonance spectroscopy can support structural identification, while high-performance liquid chromatography with ultraviolet detection may estimate purity. Because online products labeled as SR9009 may contain other substances or no active compound at all, independent verification is important in research settings. Certificates of analysis are useful but not a substitute for in-house testing.
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.
=== Historical definition === Sublimation is historically used as a generic term to describe a two-step phase transition – a solid-to-gas transition (sublimation in a more precise definition) followed by a gas-to-solid transition (deposition). (See below)
Radar is a radiolocation method used to locate and track aircraft, spacecraft, missiles, ships, vehicles, and also to map weather patterns and terrain. A radar set consists of a transmitter and receiver. The transmitter emits a narrow beam of radio waves which is swept around the surrounding space. When the beam strikes a target object, radio waves are reflected back to the receiver. The direction of the beam reveals the object's location. Since radio waves travel at a constant speed close to the speed of light, by measuring the brief time delay between the outgoing pulse and the received "echo", the range to the target can be calculated. The targets are often displayed graphically on a map display called a radar screen. Doppler radar can measure a moving object's velocity, by measuring the change in frequency of the return radio waves due to the Doppler effect. Radar sets mainly use high frequencies in the microwave bands, because these frequencies create strong reflections from objects the size of vehicles and can be focused into narrow beams with compact antennas. Parabolic (dish) antennas are widely used. In most radars the transmitting antenna also serves as the receiving antenna; this is called a monostatic radar. A radar which uses separate transmitting and receiving antennas is called a bistatic radar.
Some gas panels have a separate supply gauge for each diver downstream of the supply valve, but this is not standard practice. The gas panel may be fairly large and mounted on a board for convenience of use, or may be compact and mounted inside a portable box, for ease of transport. Gas panels are usually for one, two or three divers. In some countries, or under some codes of practice, the surface standby diver must be supplied from a separate panel to the working diver/s. A wet or closed bell will be fitted with a bell gas panel to supply gas to the divers' excursion umbilicals. The bell gas panel is supplied with primary gas from the surface via a bell umbilical, and on-board emergency gas from high-pressure storage cylinders mounted on the frame of the bell.
Absorbance Units Full Scale (AUFS) or Absorption Units Full Scale is a unit of absorbance intensity that denotes the output of a spectrophotometer. The acronym AUFS can also be written out as Absorbance Units per Full Scale Deflection.
Buck O'Neil and the Negro Leagues Baseball Museum presented Helton with the Walter Fenner "Buck" Leonard Legacy Award. Helton was also given the team-honored version of the Roberto Clemente Award, for his community contributions to eastern Tennessee. Furthermore, he was the NL winner of the second annual Hank Aaron Award. Each season from 2000 to 2003, he was named the Rockies Player of the Year. Capitalizing on his success, Helton signed a nine-year, $141.5 million contract in April 2001, which took effect after his then-contract expired after 2002. That season, Helton hit a career-high 49 home runs (22 of them occurred away from hitter-friendly Coors Field). He tied Walker for the most home runs ever by a Rockies player in one season. Additionally, Helton had a .336/.432/.685 slash line. He had 105 extra base hits, making him the first player in MLB history to have at least 100 total extra base hits in back-to-back seasons. Furthermore, Helton attained 402 total bases, making him only the fourth player in MLB history to do so in consecutive seasons (Chuck Klein, Gehrig and Foxx are the others). Helton appeared in his second consecutive All-Star Game in 2001 — his first as a starter. He won his first Gold Glove at first base and was once again a top candidate for MVP, but was beaten in balloting by Sammy Sosa and Barry Bonds. In 2002, Helton had a .329 batting average, 30 home runs, 109 RBI, 98 walks, 107 runs, .577 SLG and 319 total bases. He became the first player in Rockies history to score at least 100 runs in four consecutive seasons.
Sources: en.wikipedia.org
According to Gerard Keown, by 1932 much had been achieved in the quest for an independent foreign policy. The Free State was an established element in the European system and a member of the League of Nations. It had blazed a trail in asserting the rights of the dominions to their own foreign policy, in the process establishing full diplomatic relations with the United States, France, Belgium, Germany, and the Holy See. It was concluding its own political and commercial treaties and using the apparatus of international relations to pursue its interests. It had received the accolade of election to a non-permanent seat on the council of the League of Nations and asserted its full equality with Britain and the other dominions within the Commonwealth. By contrast, the military was drastically reduced in size and scope, with its budget cut by 82% from 1924 to 1929. The active duty forces were reduced from 28,000 men to 7,000. Co-operation with London was minimal.
The most common first symptom of all snakebites is an overwhelming fear, which may contribute to other symptoms, and may include nausea and vomiting, diarrhea, vertigo, fainting, tachycardia, and cold, clammy skin. Snake bites can have a variety of different signs and symptoms depending on their species. Dry snakebites and those inflicted by a non-venomous species may still cause severe injury. The bite may become infected from the snake's saliva. The fangs sometimes harbor pathogenic microbial organisms, including Clostridium tetani, and may require an updated tetanus immunization. Most snakebites, from either a venomous or a non-venomous snake, will have some type of local effect. Minor pain and redness occur in over 90 percent of cases, although this varies depending on the site. Bites by vipers and some cobras may be extremely painful, with the local tissue sometimes becoming tender and severely swollen within five minutes. This area may also bleed and blister and may lead to tissue necrosis. Other common initial symptoms of pit viper and viper bites include lethargy, bleeding, weakness, nausea, and vomiting. Symptoms may become more life-threatening over time, developing into hypotension, tachypnea, severe tachycardia, severe internal bleeding, altered sensorium, kidney failure, and respiratory failure. Bites by some snakes, such as the kraits, coral snake, Mojave rattlesnake, and the speckled rattlesnake, may cause little or no pain, despite their serious and potentially life-threatening venom.
== Applications == The Bergmann degradation is intended for and has been used as a method for peptide sequencing. It was also proposed for use in cleaving the 3,4-bond of the penicillin nucleus. The compound 2,2-dimethyl-6-phthalimido-3-penamyl isocyanate was arrived at through various means, including the Curtius rearrangement, and it was envisioned that it could undergo the Bergmann degradation to form the desired aldehyde as well as the urea by-product. Though the Bergmann degradation was indeed possible, it was discovered that simple dilute acid hydrolysis would suffice in forming the desired product.
The election saw the BN achieve a landslide victory, securing 148 out of 177 parliamentary seats and control of 11 state assemblies, further consolidating Mahathir's leadership. In 1987, Mahathir established the Langkawi Development Board and declared the island a duty-free zone. This was followed by the construction of key infrastructure, including the Kuah jetty and Langkawi International Airport in 1988, contributing to the island's transformation into a major tourist destination.
=== Treatment === Treatment of ibotenic acid toxicity centres around supportive care and treatment of symptoms; no antidote is available. Gastric decontamination with activated charcoal or gastric lavage can be of benefit if the patient presents early. The psychotropic effects and hallucinations ibotenic acid and its metabolite muscimol produce are best managed in a quiet environment with minimal stimulation. Benzodiazepines can be of benefit in agitated or panicked patients; they can also be used to control seizures if they occur. Benzodiazepines as a GABA-A PAM interacts with Muscimol as a GABA-A agonist and may cause a significantly increased risk of depressant effects. Airway management may be required if sedation is profound. Symptoms usually resolve within a few hours of ingestion but can last for days following significant exposures. Monitoring for the presence of brain lesions may be required following a large or repeated exposure. Other measures may be required if the patient has been exposed to a mushroom such as Amanita muscaria as other active compounds may be present.
Sources: en.wikipedia.org
=== Anti-competitive practices === In February 2017, the European Commission began investigating Valve and five other publishers—Bandai Namco Entertainment, Capcom, Focus Home Interactive, Koch Media and ZeniMax Media—for anti-competitive practices, specifically the use of geo-blocking through the Steam storefront and Steam product keys to prevent access to software to citizens of certain countries. Such practices would be against the Digital Single Market initiative by the European Union. While the other five companies named are in stages of settling with the EU as of August 2019, Valve has stated it plans to fight the charges, asserting that geo-blocking affects less than 3% of its games, and that it had turned off such geo-blocking within the EU in 2015. In January 2021, five gamers filed a proposed class-action antitrust lawsuit in California against Valve, alleging that the company "abuses the Steam platform's market power" by requiring game developers and publishers to enter into a "most favored nation" agreement with Valve, restricting their ability to sell games for less on other platforms and thereby preventing price competition. This suit was later consolidated with the Wolfire Games lawsuit.
=== Processing of precursors === The precursors for systemin and AtPEP1 are both processed to yield one active peptide from the C-terminus of the precursor. It has been speculated that ProAtPEP1 is processed by CONSTITUTIVE DISEASE RESISTANCE 1, an apoplastic aspartic protease. The precursors to HypSys are processed into more than one active peptide. In tobacco, it is processed into two peptides, in petunia into three, and in sweet potato, possibly into six. At 291 amino acids long, the precursor to HypSys in sweet potato is the longest precursor described. The production of multiple signalling peptides from one precursor is a common feature found in animals.
After he teaches them to bark on all fours to fend off cats, the family holds a memorial service for the brother. Christina again barters for oral sex from the elder daughter. The daughter rejects her offer of hair gel and demands the Hollywood VHS tapes in her bag. She watches the films (Rocky IV and Jaws) in secret and afterwards recreates scenes and quotes their dialogue. When the father discovers the tapes, he beats her with one of them, then goes to Christina's flat and hits her with her VCR, cursing her future children to be corrupted by "bad influences". The parents decide that, with Christina no longer available, they will have the son choose one of his sisters as a new sexual partner. After fondling both sisters with his eyes closed, he chooses the elder. She is uncomfortable during their sex and afterwards threatens her brother in the style of Hollywood film dialogues. During a performance for the parents' wedding anniversary, the younger daughter stops to rest, but the elder continues and dances the choreography from Flashdance, disturbing her parents. That night, she knocks out one of her dogteeth with a dumbbell and hides in the boot of her father's car. The father discovers her tooth fragments and searches for her fruitlessly. He drives to work the next day; the car sits outside the factory, unattended.
In the 20th century, the safety and efficacy of general anesthetics were further improved with the routine use of tracheal intubation and advanced airway management techniques, monitoring, and new anesthetic agents with improved characteristics. Standardized training programs for anesthesiologists and nurse anesthetists emerged during this period. Moreover, the application of economic and business administration principles to healthcare in the late 20th and early 21st centuries led to the introduction of management practices, such as transfer pricing, to improve the efficiency of anesthetists.
The high degree of structural specificity of a broad series of formylated peptides in stimulating these neutrophil responses, the specific binding of N-formylated oligopeptides to neutrophils with affinities that paralleled their stimulating potencies, the ability of t-carbobenzoxy-phenylalanyl-methionine to bind to but not stimulate neutrophils and thereby to block the neutrophil binding and stimulating activity of N-formylated oligopeptides, and the ability of the formylated oligopeptides to desensitize (i.e. render unresponsive) neutrophil functional responses to themselves but have no or a lesser ability to desensitize to a range of other chemotactic stimuli provided strong suggestive evidence that the formylated peptides acted on cells through a common, dedicated receptor system that differed from other chemotactic factor receptors.
Sources: en.wikipedia.org
It is usually detected by LC-MS or HPLC-UV against a reference standard. In biological matrices, metabolite targeting can improve detection. No universal immunoassay is widely available.
The compound is generally handled as light-sensitive and stored cold and dry. Stability in solution depends on solvent, concentration, and storage time. Specific degradation rates are not fully standardized.
Limited water solubility affects formulation for cell and animal studies. Organic co-solvents are often used to dissolve it. Precipitation can confound assay results if not controlled.
SR9009 is a synthetic small molecule studied as an agonist of the REV-ERB nuclear receptors. It is not an approved medicine, and its effects in humans are not well characterized.