Everything below concerns circadian rhythm. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-05-25. Numbers and descriptions here follow the published literature rather than marketing material.
REV-ERB proteins help regulate daily cycles in gene expression, including genes tied to lipid and glucose metabolism. SR9009 binds these receptors and alters their activity in cell and animal experiments. Consequences observed in rodents include changes in skeletal muscle oxidative capacity, blood lipid levels, and exercise performance. The precise chain from receptor occupancy to whole-body effects is still an active area of study. Human responses cannot be assumed from rodent data.
Most published work on SR9009 consists of preclinical studies. It is widely sold as a research chemical, a category that does not imply safety, efficacy, or pharmaceutical-grade quality. Sports anti-doping organizations have listed SR9009 as a prohibited substance, and its presence in an athlete sample can lead to sanctions. Legal status differs by country; in several jurisdictions it is not approved for human consumption and may be treated as an unapproved new drug.
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.
| Property | Value | Notes |
|---|---|---|
| Common name | SR9009 | Also referred to as Stenabolic in non-scientific contexts. |
| Chemical class | Synthetic small molecule | Not a steroid or peptide hormone. |
| Receptor target | REV-ERBα and REV-ERBβ | Nuclear receptor agonist in preclinical studies. |
| Development status | Investigational | No approved human therapeutic indication. |
| Regulatory attention | Prohibited in sport | Listed by anti-doping authorities. |
SR9009 is often grouped with compounds studied for circadian and metabolic regulation rather than with classical anabolic steroids. Its interactions with nuclear receptors differ from those of androgen receptor ligands, and its proposed mechanisms involve transcriptional control rather than direct hormone signaling. Some sources classify it as a metabolic modulator because of observed effects on energy utilization. The distinction matters for regulation and for interpreting research results across different compound classes.
SR9009 is a synthetic small molecule developed as a REV-ERB agonist. It binds to REV-ERBα and REV-ERBβ, nuclear receptors that help regulate circadian rhythms and metabolic gene expression. In cell and animal studies, the compound alters lipid and glucose handling and influences skeletal muscle oxidative capacity. Its exact effects in humans remain largely uncharacterized because controlled clinical trials have not been reported. The molecule is frequently described in preclinical literature as a metabolic modulator.
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.
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.
Storage recommendations for SR9009 reference material typically specify a freezer at -20 °C or lower, with protection from moisture and light. Repeated freeze-thaw cycles can degrade small molecules and introduce variability. Stock solutions in dimethyl sulfoxide are often aliquoted to avoid repeated handling. Stability studies may examine degradation under heat, humidity, and light exposure. The compound's thiophene and nitro groups can participate in reactions that alter analytical signals over time, so such changes affect quantitative results.
Quality control for research materials includes identity confirmation by nuclear magnetic resonance and purity assessment by high-performance liquid chromatography. Mass spectrometry provides molecular weight confirmation and can detect related impurities. Purchasers should request a certificate of analysis that lists lot-specific data. Online products advertised for human use often lack such documentation. Distinguishing legitimate research material from mislabeled or contaminated samples is a recurring challenge in independent testing, and independent laboratories may use orthogonal methods to verify identity.
Detection of SR9009 in biological samples usually relies on liquid chromatography coupled to tandem mass spectrometry. This approach separates the compound from matrix components and identifies it by mass transitions. Because SR9009 can undergo metabolism, laboratories often look for both parent drug and specific metabolites. Sample preparation may involve protein precipitation or solid-phase extraction. Method validation examines sensitivity, carryover, and interference from related substances, and reference standards are required for accurate calibration.
=== Chemical === Darmstadtium is the eighth member of the 6d series of transition metals, and should be much like the platinum group metals. Calculations on its ionization potentials and atomic and ionic radii are similar to that of its lighter homologue platinum, thus implying that darmstadtium's basic properties will resemble those of the other group 10 elements, nickel, palladium, and platinum. Prediction of the probable chemical properties of darmstadtium has not received much attention recently. Darmstadtium should be a very noble metal. The predicted standard reduction potential for the Ds2+/Ds couple is 1.7 V. Based on the most stable oxidation states of the lighter group 10 elements, the most stable oxidation states of darmstadtium are predicted to be the +6, +4, and +2 states; however, the neutral state is predicted to be the most stable in aqueous solutions. In comparison, only platinum is known to show the maximum oxidation state in the group, +6, while the most stable state is +2 for both nickel and palladium. It is further expected that the maximum oxidation states of elements from bohrium (element 107) to darmstadtium (element 110) may be stable in the gas phase but not in aqueous solution. Darmstadtium hexafluoride (DsF6) is predicted to have very similar properties to its lighter homologue platinum hexafluoride (PtF6), having very similar electronic structures and ionization potentials. It is also expected to have the same octahedral molecular geometry as PtF6.
=== Other sites and metastases === Metastasis of carcinoid can lead to carcinoid syndrome. This is due to the over-production of many substances, including serotonin, which are released into the systemic circulation, and which can lead to symptoms of cutaneous flushing, diarrhea, bronchoconstriction, and right-sided cardiac valve disease. It is estimated that less than 6% of carcinoid patients will develop carcinoid syndrome, and of these, 50% will have cardiac involvement.
=== Appointment === As per Art. 316, the chairman and other members of the Union Public Service Commission shall be appointed by the president. In case the office of the chairman becomes vacant, the duties shall be performed by one of the other members of the Commission at the appointment of the President. Also, nearly half of the members of the Commission shall be persons who, at the dates of their respective appointments, have held office for at least ten years either under the Government of India or under the Government of a State. A member of the Union Public Service Commission shall hold office for a term of six years from the date on which they enter upon the office or until they attain the age of sixty-five years, whichever is earlier. Under Art 318, the President is empowered to determine the number of members of the commission and their conditions of service. As per Art 319, a person who holds office as chairman shall, on the expiration of the term of office, be ineligible for re-appointment to that office. But, a member other than the chairman of the Union Public Service Commission shall be eligible for appointment as the chairman of the Union Public Service Commission, or as the chairman of a State Public Service Commission, but not for any other employment either under the Government of India or under the Government of a State. Also, the chairman of a State Public Service Commission shall be eligible for appointment as the chairman or any other member of the Union Public Service Commission.
=== Anti-thyroid drugs === Treatment with methimazole or propylthiouracil for hyperthyroidism, is commonly associated with an elevation of liver enzymes. To differentiate between hyperthyroidism and drug-related liver injury, it is recommended to check baseline liver enzymes prior to initiation of treatment. If liver injury related to anti-thyroid treatment is significant, switching to the alternative agent can be attempted in most cases. Cases of fulminant liver failure reported with propylthiouracil have led to a regulatory warning, and to guidelines recommending methimazole as the first line anti-thyroid agent.
The ability to acquire a large number of chemists and engineers quickly was a huge contribution to the success of DuPont's nylon project. The first nylon plant was located at Seaford, Delaware, beginning commercial production on December 15, 1939. On October 26, 1995, the Seaford plant was designated a National Historic Chemical Landmark by the American Chemical Society.
Sources: en.wikipedia.org
In one of the largest studies on regional body mass, bears in British Columbia averaged 73.7 kg (162 lb) in 89 females and 103.1 kg (227 lb) in 243 males. In Yellowstone National Park, a study found that adult males averaged 119 kg (262 lb) and adult females averaged 67 kg (148 lb). Black bears in north-central Minnesota averaged 70 kg (150 lb) in 163 females and 125 kg (276 lb) in 77 males. In New York, the males average 136 kg (300 lb) and females 72.6 kg (160 lb). It was found in Nevada and the Lake Tahoe region that bears closer to urban regions were significantly heavier than their arid-country dwelling counterparts, with males near urban areas averaging 138 kg (304 lb) against wild-land males which averaged 115.5 kg (255 lb) whereas peri-urban females averaged 97.9 kg (216 lb) against the average of 65.2 kg (144 lb) in wild-land ones. In Waterton Lakes National Park, Alberta, adults averaged 125 to 128 kg (276 to 282 lb). The biggest wild American black bear ever recorded was a male from New Brunswick, shot in November 1972, that weighed 409 kg (902 lb) after it had been dressed, meaning it weighed an estimated 500 kg (1,100 lb) in life and measured 2.41 m (7 ft 11 in) long. Another notably outsized wild American black bear, weighing in at 408 kg (899 lb), was the cattle-killer shot in December 1921 on the Moqui Reservation in Arizona. The record-sized American black bear from New Jersey was shot in Morris County December 2011 and scaled 376.5 kg (830 lb). The Pennsylvania state record weighed 399 kg (880 lb) and was shot in November 2010 in Pike County.
After electrophoresis is complete, the molecules in the gel can be stained to make them visible. DNA may be visualized using ethidium bromide which, when intercalated into DNA, fluoresce under ultraviolet light, while protein may be visualised using silver stain or Coomassie brilliant blue dye. Other methods may also be used to visualize the separation of the mixture's components on the gel. If the molecules to be separated contain radioactivity, for example in a DNA sequencing gel, an autoradiogram can be recorded of the gel. Photographs can be taken of gels, often using a gel doc system. Gels are then commonly labelled for presentation using a number of tools, such as Adobe Illustrator, GIMP, ImageJ, Microsoft PowerPoint, and sciugo.
This document reaffirmed the right to have access to safe and nutritious food by everyone, also considering that everyone gets sufficient food, and set the goals for all nations to improve their commitment to food security by halving their number of undernourished people by 2015. In 2004 the Food and Agriculture Organization adopted the Right to Food Guidelines, which offered states a framework of how to increase the right to food on a national basis.
=== EC 1.3.7 With an iron–sulfur protein as acceptor === EC 1.3.7.1: 6-hydroxynicotinate reductase EC 1.3.7.2: 15,16-dihydrobiliverdin:ferredoxin oxidoreductase EC 1.3.7.3: phycoerythrobilin:ferredoxin oxidoreductase EC 1.3.7.4: phytochromobilin:ferredoxin oxidoreductase EC 1.3.7.5: phycocyanobilin:ferredoxin oxidoreductase EC 1.3.7.6: phycoerythrobilin synthase EC 1.3.7.7: ferredoxin:protochlorophyllide reductase (ATP-dependent) EC 1.3.7.8: benzoyl-CoA reductase EC 1.3.7.9: 4-hydroxybenzoyl-CoA reductase EC 1.3.7.10: pentalenolactone synthase EC 1.3.7.15: chlorophyllide a reductase
=== Solid interfaces === Nano-particles can self-assemble on solid surfaces after external forces (like magnetic and electric) are applied. Templates made of microstructures, like carbon nanotubes or block polymers, can also be used to assist in self-assembly. They cause directed self-assembly (DSA), in which active sites are embedded to selectively induce nanoparticle deposition. Such templates are objects onto which different particles can be arranged into a structure with a morphology similar to that of the template. Carbon nanotubes (microstructures), single molecules, or block copolymers are common templates. Nanoparticles are often shown to self-assemble within distances of nanometers and micrometers, but block copolymer templates can be used to form well-defined self-assemblies over macroscopic distances. By incorporating active sites to the surfaces of nanotubes and polymers, the functionalization of these templates can be transformed to favor self-assembly of specified nanoparticles.
Sources: en.wikipedia.org
== Metabolism == Metabolism of 1,3-dibromopropane was examined in 1981. The examination was done by orally administering 1,3-dibromopropane to rats and collecting results 24 hours after administration. Results were obtained from three sources: urine, faeces, and expired air. Upon analysis of the urinary results, researchers discovered the formation of metabolite, N-acetyl-S-(1-bromo-3-propyl)-cysteine and the decline in the GSH content of the liver of the rats. This led to the assumption that 1,3-dibromopropane could have reacted with GSH after administration and gave rise to 1-bromo-3-propyl-S-glutathione, which ultimately form the urinary metabolite. Moreover, due to little radioactivity observed from feces and the confirmation from maintained blood levels of radioactivity proved the occurrence of biliary excretion of sulfur-containing metabolites and enterohepatic cycling.
Many types of glucose tests exist and they can be used to estimate blood sugar levels at a given time or, over a longer period of time, to obtain average levels or to see how fast the body is able to normalize changed glucose levels. Eating food for example leads to elevated blood sugar levels. In healthy people, these levels quickly return to normal via increased cellular glucose uptake which is primarily mediated by increase in blood insulin levels. Glucose tests can reveal temporary/long-term hyperglycemia or hypoglycemia. These conditions may not have obvious symptoms and can damage organs in the long-term. Abnormally high/low levels, slow return to normal levels from either of these conditions and/or inability to normalize blood sugar levels means that the person being tested probably has some kind of medical condition like type 2 diabetes which is caused by cellular insensitivity to insulin. Glucose tests are thus often used to diagnose such conditions.
Pu-239 is produced artificially in nuclear reactors when a neutron is absorbed by U-238, forming U-239, which then decays in a rapid two-step process into Pu-239. It can then be separated from the uranium in a nuclear reprocessing plant. Weapons-grade plutonium is defined as being predominantly Pu-239, typically about 93% Pu-239. Pu-240 is produced when Pu-239 absorbs an additional neutron and fails to fission. Pu-240 and Pu-239 are not separated by reprocessing. Pu-240 has a high rate of spontaneous fission, which can cause a nuclear weapon to pre-detonate, producing a fizzle. This makes plutonium unsuitable for use in gun-type nuclear weapons. To reduce the concentration of Pu-240 in the plutonium produced, weapons program plutonium production reactors (e.g. B Reactor) irradiate the uranium for a far shorter time than is normal for a nuclear power reactor. More precisely, weapons-grade plutonium is obtained from uranium irradiated to a low burnup. This represents a fundamental difference between these two types of reactor. In a nuclear power station, high burnup is desirable. Power stations such as the obsolete British Magnox and French UNGG reactors, which were designed to produce either electricity or weapons material, were operated at low power levels with frequent fuel changes using online refuelling to produce weapons-grade plutonium. Such operation is not possible with the light water reactors most commonly used to produce electric power. In these the reactor must be shut down and the pressure vessel disassembled to gain access to the irradiated fuel.
== Interactions == The drug may increase the risk of dehydration in combination with diuretic drugs. Because it increases renal excretion of glucose, treatment with canagliflozin prevents renal reabsorption of 1,5-anhydroglucitol, leading to artifactual decreases in serum 1,5-anhydroglucitol. Therefore, canagliflozin can interfere with the use of serum 1,5-anhydroglucitol (assay trade name, GlycoMark) as a measure of postprandial glucose levels. Dosing adjustment is also required for concomitant therapy with UDP-glucuronosyl transferase (UGT) inducers such as rifampin, phenytoin, or phenobarbital, ritonavir.
== OSCE monitors == A former senior Organization for Security and Co-operation in Europe (OSCE) official, Ryan Grist, who was responsible for monitors in South Ossetia at war's start, told the BBC in November 2008 that he had been warning of Georgian military movement before the full-scale war, saying there was a "severe escalation" and that this "would give the Russian Federation any excuse it needed in terms of trying to support its own troops." According to Grist, the first attack on Tskhinvali came from Georgia, which "was completely indiscriminate and disproportionate to any, if indeed there had been any, provocation." Grist's views were echoed by Stephen Young, who was another senior OSCE official in Georgia at the time. According to him, there had been no large-scale shelling of the Georgian villages on late 7 August. Young added, that if Georgian villages had been shelled heavily that evening, the OSCE monitors at the scene would have heard it. According to him, "only occasional small arms fire" was heard. Georgian officials and some Western diplomats in Tbilisi later disputed Grist's neutrality. The attempts by The New York Times to interview the monitors were curbed by the OSCE. The OSCE sought to avoid open involvement in dispute. The monitors' claims were assessed as "a bit irrelevant" by head of the OSCE mission to Georgia Terhi Hakala.
Sources: en.wikipedia.org
It is a synthetic compound studied as an agonist of REV-ERB nuclear receptors. It is not an approved medicine and has mainly been examined in laboratory and animal research.
No. It is a small molecule that binds nuclear receptors involved in circadian regulation. Its classification differs from anabolic steroids or peptide hormones.
Published human clinical trial data are lacking. Most safety and activity information comes from preclinical models, so effects in people remain uncertain.
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.