If you have been reading about research chemical and want a single page that covers the useful parts, this is it: definitions, context, how it is studied, and the questions that come up repeatedly.
Updated 2026-06-29. Numbers and descriptions here follow the published literature rather than marketing material.
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.
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.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is not a steroid, peptide, or natural hormone. In scientific literature, it appears under the code SR9009 and in non-scientific contexts as Stenabolic. The compound was identified through chemical screening efforts aimed at targeting circadian clock components. Its status remains investigational, and no regulatory agency has approved it as a human medicine.
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.
| Property | Value | Notes |
|---|---|---|
| Synonyms | SR9009; Stenabolic | Stenabolic is an informal name |
| Common form | Crystalline powder | Supplied in milligram to gram quantities |
| Long-term storage | -20 °C, desiccated, protected from light | Reduces degradation |
| Detection technique | LC-MS/MS | Common in anti-doping and research analysis |
| Regulatory status | Prohibited in sport by WADA | Not approved for human therapeutic use |
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.
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.
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.
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.
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.
=== Arrangements === According to the visit schedule announced by the White House, Xi Jinping and his wife Peng Liyuan would arrive at Andrews Air Force Base on September 23. Trump and First Lady Melania Trump would greet the couple at the airport and held a welcoming ceremony. On September 24, the Trump couple would greet Xi and Peng at the White House, followed by a guard of honor review in the Rose Garden before the summit meeting. That evening, a state dinner would be held in the East Room of the White House, which will be attended by several heads of American technology giants. On September 25, the Trump couple would host a tea party for Xi and Peng at the White House, and the two sides would then visit to the National Archives of the United States to see founding documents of the United States. After the trip, Xi and Peng would return to Andrews Air Force Base and leave the United States by special plane. The guest list for the state dinner included:
== Research == The UNC School of Medicine operates eleven centers and institutes for research which conduct basic, translational, and clinical work, including the Cell and Molecular Physiology and Genetics Department, the Marsico Lung Institute, and the Lineberger Cancer Research Center. Much of the School's research is conducted in collaboration with other UNC schools and programs, including the UNC Eshelman School of Pharmacy and the UNC Gillings School of Global Public Health. There are also many collaborations between UNC and nearby universities, including Duke University and North Carolina State University. The latter partnership led to the creation of the Lampe Joint Department for Biomedical Engineering, a shared department focused on biomedical engineering and innovation founded in 2003. In 2024, the school received US$649 million in research funding, approximately 74% of which came from the National Institutes of Health. Two researchers at UNC have been awarded Nobel Prizes: Oliver Smithies (2007 Nobel Prize in Medicine or Physiology) for his work on gene targeting and knockout mice, and Aziz Sancar (2015 Nobel Prize in Chemistry) for his work mapping the cellular mechanisms responsible for DNA repair.
=== Approval === On April 1, 2008, Progenics and Wyeth announced that Health Canada has approved methylnaltrexone for the treatment of opioid-induced constipation. It was later approved by the US FDA on April 24, 2008.
==== Antibody-dependent cell-mediated cytotoxicity (ADCC) ==== Antibody-dependent cell-mediated cytotoxicity (ADCC) requires antibodies to bind to target cell surfaces. Antibodies are formed of a binding region (Fab) and the Fc region that can be detected by immune system cells via their Fc surface receptors. Fc receptors are found on many immune system cells, including NK cells. When NK cells encounter antibody-coated cells, the latter's Fc regions interact with their Fc receptors, releasing perforin and granzyme B to kill the tumor cell. Examples include rituximab, ofatumumab, elotuzumab, and alemtuzumab. Antibodies under development have altered Fc regions that have higher affinity for a specific type of Fc receptor, FcγRIIIA, which can dramatically increase effectiveness.
Their capacities only allow them to be considered equivalent to what are now known as AI Cores, small (in the literal physical sense) Artificial intelligences used in shuttles, trans-light modules, Drones, and other machines not large enough for a full scale Mind. While still considered sentient, a mind's power at this point is considered greatly inferior to a contemporary Mind. That said, It is possible for Minds to have upgrades, improvements and enhancements given to them since construction, to allow them to remain up to date. Using the sensory equipment available to the Culture, Minds can see inside solid objects; in principle they can also read minds by examining the cellular processes inside a living brain, but Culture Minds regard such mindreading as taboo. The only known Mind to break this Taboo, the GCU Grey Area seen in Excession, is largely ostracised and shunned by other Minds as a result. In Look to Windward an example is cited of an attempt to destroy a Culture Mind by smuggling a minuscule antimatter bomb onto a Culture orbital inside the head of a Chelgrian agent. However the bomb ends up being spotted without the taboo being broken. In Consider Phlebas, a typical Mind is described as a mirror-like ellipsoid of several dozen cubic metres, but weighing many thousands of tons, due to the fact that it is made up of hyper-dense matter. It is noted that most of its 'body' only exists in the real world at the outer shell, the inner workings staying constantly within hyperspace.
Sources: en.wikipedia.org
=== Australia === Australia has documented 10 cases of healthcare-acquired CJD (iatrogenic or ICJD). Five of the deaths resulted after the patients, who were in treatment either for infertility or short stature, were treated using contaminated pituitary extract hormone but no new cases have been noted since 1991. The other five deaths occurred due to dura mater grafting procedures that were performed during brain surgery, in which the covering of the brain is repaired. There have been no other ICJD deaths documented in Australia due to transmission during healthcare procedures.
Before the 18th century, chemists generally believed that compounds obtained from living organisms were endowed with a vital force that distinguished them from inorganic compounds. According to the concept of vitalism (vital force theory), organic matter was endowed with a "vital force". During the first half of the nineteenth century, some of the first systematic studies of organic compounds were reported. Around 1816 Michel Chevreul started a study of soaps made from various fats and alkalis. He separated the acids that, in combination with the alkali, produced the soap. Since these were all individual compounds, he demonstrated that it was possible to make a chemical change in various fats (which traditionally come from organic sources), producing new compounds, without "vital force". In 1828 Friedrich Wöhler produced the organic chemical urea (carbamide), a constituent of urine, from inorganic starting materials (the salts potassium cyanate and ammonium sulfate), in what is now called the Wöhler synthesis. Although Wöhler himself was cautious about claiming he had disproved vitalism, this was the first time a substance thought to be organic was synthesized in the laboratory without biological (organic) starting materials. The event is now generally accepted as indeed disproving the doctrine of vitalism. After Wöhler, Justus von Liebig worked on the organization of organic chemistry, being considered one of its principal founders. In 1856, William Henry Perkin, while trying to manufacture quinine, accidentally produced the organic dye now known as Perkin's mauve.
One non-blinded non-randomized study determined the effectiveness of emoxypine in 205 patients with clinical manifestations of lumbosacral radiculopathy (LSR). Patients were divided into two groups, and further were divided into subgroups depending on the presence of motor disturbances. All patients received a course of conventional medical treatment and physiotherapy; main group additionally received emoxypine. Thereafter, clinical-neurological control of long-term results of treatment in subgroups of patients was performed. The results showed that the use of emoxypine in the combined therapy of patients with LSR led to significant and persistent reduction of severity of pain syndrome and rapid recovery of function of spinal roots and peripheral nerves compared with conventional therapy. However, these studies are primary research, and the effectiveness or purported pharmaceutical efficiency of emoxypine has not yet been validated through a meta analysis or systematic review.
Brazilian cuisine varies greatly by region, reflecting the country's varying mix of indigenous and immigrant populations. This has created a national cuisine marked by the preservation of regional differences. Some of the most well known Brazilian foods are the feijoada, considered the country's national dish; and churrasco, a kind of barbecue which is often served in rodízio style. Other regional foods include beijú, feijão tropeiro, vatapá, moqueca, polenta (from Italian cuisine) and acarajé (from African cuisine). The national beverage is coffee; cachaça is Brazil's native liquor. Cachaça is distilled from sugar cane and is the main ingredient in the national cocktail, Caipirinha. A typical meal consists mostly of rice and beans with beef, salad, french fries and a fried egg. Often, it is mixed with cassava flour (farofa). Fried potatoes, fried cassava, fried banana, fried meat and fried cheese are very often eaten in lunch and served in most typical restaurants. Popular snacks are pastel (a fried pastry); coxinha (a variation of chicken croquete); pão de queijo (cheese bread and cassava flour / tapioca); pamonha (corn and milk paste); esfirra (a variation of Lebanese pastry); kibbeh (from Arabic cuisine); and empada (pastry), little salt pies filled with shrimps or heart of palm. Brazil has a variety of desserts such as brigadeiros (chocolate fudge balls), bolo de rolo (roll cake with goiabada), cocada (a coconut sweet), beijinhos (coconut truffles and clove) and Romeu e Julieta (cheese with goiabada). Peanuts are used to make paçoca, rapadura and pé de moleque.
Sources: en.wikipedia.org
Sarcoidosis Granulomatous lung diseases Tuberculosis Fungal infections (e.g., histoplasmosis) Granulomatosis with polyangiitis Idiopathic pulmonary fibrosis Hypersensitivity pneumonitis Asthma Diagnosis of berylliosis is based on history of beryllium exposures, documented beryllium sensitivity, and granulomatous inflammation on lung biopsy. Given the invasive nature of a lung biopsy, diagnosis can also be based on clinical history consistent with berylliosis, abnormal chest x-ray or CT scan findings, and abnormalities in pulmonary function tests. The radiologic and pathologic features of berylliosis are very similar to sarcoidosis. Due to the strong clinical and histopathological resemblance of sarcoidosis and berylliosis, patients are sometimes misdiagnosed with sarcoidosis until the history of exposure to beryllium is elicited and beryllium hypersensitivity demonstrated with specific testing. Some studies suggest that up to 6% of all cases of sarcoidosis are actually berylliosis. The beryllium lymphocyte proliferation test (BeLPT) is the standard way of determining sensitivity to beryllium. The test is performed by acquiring either peripheral blood or fluid from a bronchial alveolar lavage, and lymphocytes are cultured with beryllium sulfate. Cells are then counted and those with elevated number of cells are considered abnormal. Those exposed persons with two abnormal BeLPT tested with peripheral blood, or one abnormal and one borderline result, are considered beryllium sensitized.
=== April === 1 April The cost of an average annual energy bill falls by £238 to £1,690 under the latest Ofgem price cap, its lowest for two years. The cost of a TV licence increases by £10.50 from £159 to £169.50. The National Living Wage rises from £10.42 to £11.44 per hour, and is extended to workers over 21. 2 April Royal Mail stamp increases – 1st class standard stamp goes up by 10p to £1.35 and 2nd class standard increases by 10p to 85p. Other postage has increased too. Three Britons, named as John Chapman, James Henderson and James Kirby, are identified as being among seven people working for the food charity World Central Kitchen, who were killed during air strikes in Gaza the previous day. Data compiled by the British Retail Consortium indicates falling prices of sugar, jam and chocolate helped to reduce food inflation to its lowest level for two years in March. 3 April – The Liberal Democrats, Scottish National Party and former UK national security adviser Lord Ricketts call for an immediate suspension of the sale of arms to Israel following the World Central Kitchen air strikes. 4 April Three former Supreme Court justices and more than 600 legal experts call for the UK government to end weapons sales to Israel, saying the UK risks breaking international law over a "plausible risk of genocide" in Gaza. Foreign Secretary David Cameron rules out sending western troops to Ukraine since it would provide Russia with a "target".
In 2010, the Ghent nosology was revised, and new diagnostic criteria superseded the previous agreement made in 1996. The seven new criteria can lead to a diagnosis: In the absence of a family history of MFS:
Sources: en.wikipedia.org
Laboratories commonly use liquid chromatography coupled with mass spectrometry to detect SR9009. The method can identify the compound and estimate concentration in a sample. Detection limits depend on the matrix and instrument.
Research-grade purity indicates a supplier's measured percentage of the intended compound. It does not guarantee safety, sterility, or suitability for human consumption. Buyers should request a certificate of analysis with chromatograms and test methods.
Sports regulators prohibit SR9009 because it is a non-approved substance with potential performance-altering effects. Its presence can be detected in anti-doping testing. Athletes are responsible for substances found in their samples.
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.