storage stability is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Last reviewed on 2025-11-06. Where a claim depends on a specific study, the study is described rather than over-claimed.
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.
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.
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 |
|---|---|---|
| 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 |
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.
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.
Glutathione peroxidase 1, also known as GPx1, is an enzyme that in humans is encoded by the GPX1 gene on chromosome 3. This gene encodes a member of the glutathione peroxidase family. Glutathione peroxidase functions in the detoxification of hydrogen peroxide, and is one of the most important antioxidant enzymes in humans.
=== Diagnostic use === Immunohistochemistry using antibodies to ubiquitin can identify abnormal accumulations of this protein inside cells, indicating a disease process. These protein accumulations are referred to as inclusion bodies (which is a general term for any microscopically visible collection of abnormal material in a cell). Examples include:
New York: Norton. ISBN 978-0-393-05554-2.; online review Parish, Peter J. (1989). Slavery: History and Historians. New York: Westview Press. ISBN 978-0-06-437001-1. Parish, Peter J. (2018). Slavery: History And Historians. Routledge. ISBN 978-0-429-97694-0. Phillips, Ulrich Bonnell (1918). American Negro Slavery: A Survey of the Supply, Employment and Control of Negro Labor as Determined by the Plantation Régime. D. Appleton. p. 1. Phillips, Ulrich Bonnell (2007). Life and Labor in the Old South. University of South Carolina Press. ISBN 978-1-57003-678-1. Resendez, Andres (2016). The Other Slavery: The Uncovered Story of Indian Enslavement in America. Houghton Mifflin Harcourt. p. 448. ISBN 978-0-544-60267-0 – via Google Books. Sellers, James Benson (1994). Slavery in Alabama. University of Alabama Press. ISBN 978-0-8173-0594-9. Stampp, Kenneth Milton (1969). The Peculiar Institution: Slavery in the Antebellum South. A.A. Knopf. Trenchard, David (2008). "Slavery in America". In Hamowy, Ronald (ed.). The Encyclopedia of Libertarianism. Thousand Oaks, CA: Sage; Cato Institute. pp. 469–70. doi:10.4135/9781412965811.n286. ISBN 978-1-4129-6580-4. LCCN 2008009151. OCLC 750831024. Vorenberg, Michael (May 21, 2001). Final Freedom: The Civil War, the Abolition of Slavery, and the Thirteenth Amendment. Cambridge University Press. ISBN 978-0-521-65267-4. Weinstein, Allen; Gatell, Frank Otto; Sarasohn, David, eds. (1979). American Negro Slavery: A Modern Reader. Oxford University Press. ISBN 978-0-19-502470-8.
== Corruption == Corruption Perceptions Index 2019: Thailand ranked 101 of 180 nations (1=cleanest; 180=most corrupt). Other ASEAN nations ranked: Singapore, 4; Brunei, 35; Malaysia, 51; Indonesia, 85; Vietnam, 96; Philippines, 113; Myanmar, 130; Laos, 130 (tie); and Cambodia, 162. Corruption Perceptions Index 2018: Thailand ranked 99 of 180 nations (1=clean; 180=most corrupt). Other ASEAN nations ranked: Singapore, 3; Brunei, 31; Malaysia, 61; Indonesia, 89; Philippines, 99 (tie); Vietnam, 117; Myanmar, 132; Laos, 132 (tie); and Cambodia, 161. Corruption Perceptions Index 2017: Thailand ranked 96 of 180 nations (1=clean; 180=most corrupt). Other ASEAN nations ranked: Singapore, 6; Brunei, 32; Malaysia, 62; Indonesia, 96 (tie); Vietnam, 107; Philippines, 111; Myanmar, 130; Laos, 135; and Cambodia, 161. Corruption Perceptions Index 2016: Thailand ranked 101 of 176 nations (1=clean; 176=most corrupt). Other ASEAN nations ranked: Singapore, 7; Brunei, 41; Malaysia, 56; Indonesia, 90; Philippines, 101; Vietnam, 113; Laos, 123; Myanmar, 136; and Cambodia, 156. Corruption Perceptions Index 2015: Thailand ranked 76 of 167 nations (1=clean; 167=most corrupt) on this annual survey. Other ASEAN nations were ranked: Singapore, 8; Malaysia, 54; Indonesia, 88; Philippines, 95; Vietnam, 112; Laos, 139; Myanmar, 147; and Cambodia, 150. Corruption Perceptions Index 2014: Transparency International's CPI 2014 ranked Thailand 85 of 174 countries (1=clean; 174=most corrupt).
=== Stage I: Acute necrotizing gingivitis === This is the first stage of noma. The gums are red or reddish-purple and bleed spontaneously. The child has fetid breath and may drool. Painful ulcers of the gums develop, causing trouble eating. If the patient is malnourished and has recently been sick with an infectious disease, such as measles or chickenpox, they are at more risk for developing noma. Fever may develop at this stage, which can persist indefinitely. Appropriate treatment at this stage can halt the disease.
Sources: en.wikipedia.org
COVID-19 apps include mobile-software applications for digital contact-tracing—i.e. the process of identifying persons ("contacts") who may have been in contact with an infected individual—deployed during the COVID-19 pandemic. Numerous tracing applications have been developed or proposed, with official government support in some territories and jurisdictions. Several frameworks for building contact-tracing apps have been developed. Privacy concerns have been raised, especially about systems that are based on tracking the geographical location of app users. Less overtly intrusive alternatives include the co-option of Bluetooth signals to log a user's proximity to other cellphones. (Bluetooth technology has form in tracking cell-phones' locations.)) On 10 April 2020, Google and Apple jointly announced that they would integrate functionality to support such Bluetooth-based apps directly into their Android and iOS operating systems. India's COVID-19 tracking app Aarogya Setu became the world's fastest growing application—beating Pokémon Go—with 50 million users in the first 13 days of its release. (Full article...)
=== Electronic spectrum === Electrons propagating through the graphene honeycomb lattice effectively lose their mass, producing quasi-particles described by a 2D analogue of the Dirac equation rather than the Schrödinger equation for spin-1/2 particles.
== Early life and education == Wittliff was born on June 15, 1938 in Taft, Texas, of primarily Eastern European heritage. He is a 6th generation Texan and direct descendant of John Cryer (Crier), who was recruited to settle Texas as part of Stephen F. Austin's original 300 families. He, his brother Bill and their mother Laura moved to Blanco when they were boys. In 1956, Wittliff graduated from San Marcos Academy, a college preparatory school that emphasized military discipline and training at the time. After 2 years of studying Chemical Engineering at Texas Tech University where he was a writer for The Daily Toreador and the National Publication Headquarters for the Arnold Air Society, he received a bachelor's degree in chemistry from University of Texas at Austin. While at UT, Wittliff worked at Clyde Campbell University Shop and modeled to support his education. Wittliff then earned an M. S. Degree in Biochemistry at Louisiana State University, School of Medicine. Wittliff's family moved to the University of Texas at Austin where he was awarded an National Defense Education Act (NDEA) Fellowship, a program influenced by the launch of the Sputnik satellite by the Soviets. Wittliff received his Ph.D. degree at The University of Texas at Austin in 1967. He then received an NIH Postdoctoral Award to study in the Laboratory of Professor Francis T. Kenney in the Biology Division at Oak Ridge National Laboratory.
==== Ketoacid ==== Currently, the best available evidence suggests that the ketoacid is originally attached to the chromophore core (as L-glutamate) when it is synthesized from D-tyrosine, L-2,4-diaminobutyric acid, and L-glutamate. It is unclear how this is later altered to the other congenerate (i.e., a-ketoglutarate, succinate/succinamide, etc.) forms.
Surgical correction of inguinal hernias is called a hernia repair. It is not recommended in minimally symptomatic hernias, for which watchful waiting is advised, due to the risk of post-herniorraphy pain syndrome. Surgery is commonly performed as outpatient surgery. Various surgical strategies may be considered in the planning of inguinal hernia repair. These include the consideration of mesh use (e.g., synthetic or biologic), open repair, use of laparoscopy, type of anesthesia (general or local), appropriateness of bilateral repair, etc. Mesh or non-mesh repairs have both benefits in different areas, but mesh repairs may reduce the rate of hernia reappearance, visceral or neurovascular injuries, length of hospital stay, and time to return to activities of daily living. In emergency surgery, it is currently uncertain if mesh or non-mesh repair works best. Laparoscopy is most commonly used for non-emergency cases; however, a minimally invasive open repair may have a lower incidence of post-operative nausea and mesh associated pain. During surgery conducted under local anaesthesia, the patient will be asked to cough and strain during the procedure to help in demonstrating that the repair is without tension and sound.
Sources: en.wikipedia.org
The vaginal plate is the precursor to the vagina. During development, the vaginal plate begins to grow where the fused ends of the paramesonephric ducts (Müllerian ducts) enter the back wall of the urogenital sinus as the sinus tubercle. As the plate grows, it significantly separates the cervix and the urogenital sinus; eventually, the central cells of the plate break down to form the vaginal lumen. This usually occurs by the twenty to twenty-fourth week of development. If the lumen does not form, or is incomplete, membranes known as vaginal septa can form across or around the tract, causing obstruction of the outflow tract later in life. There are conflicting views on the embryologic origin of the vagina. The majority view is Koff's 1933 description, which posits that the upper two-thirds of the vagina originate from the caudal part of the Müllerian duct, while the lower part of the vagina develops from the urogenital sinus. Other views are Bulmer's 1957 description that the vaginal epithelium derives solely from the urogenital sinus epithelium, and Witschi's 1970 research, which reexamined Koff's description and concluded that the sinovaginal bulbs are the same as the lower portions of the Wolffian ducts. Witschi's view is supported by research by Acién et al., Bok and Drews. Robboy et al. reviewed Koff and Bulmer's theories, and support Bulmer's description in light of their own research. The debates stem from the complexity of the interrelated tissues and the absence of an animal model that matches human vaginal development.
Hydroxyzine, sold under the brand names Atarax (as hydrochloride) and Vistaril (as pamoate) among others, is an antihistamine medication. It is used in the treatment of itchiness, anxiety, insomnia, and nausea (including that due to motion sickness). It is used either by mouth or injection into a muscle. Hydroxyzine works by blocking the effects of histamine. It is a first-generation antihistamine in the piperazine family of chemicals. Common side effects include sleepiness, headache, and dry mouth. Serious side effects may include QT prolongation. It is unclear if use during pregnancy or breastfeeding is safe. It was first made by Union Chimique Belge in 1956 and was approved for sale by Pfizer in the United States later that year. In 2023, it was the 39th most commonly prescribed medication in the United States, with more than 15 million prescriptions.
=== Diet supplement === Donkey's milk is recommended for countering stomach acid, promoting the growth of intestinal flora, calming coughs and pertussis (a.k.a. whooping cough), and for use in the treatment of immune-mediated disorders.
Recent cases of anti-Peruvianism were seen in 2000, as the magazine La Primera denounced a "silent invasion" of Peruvians and Bolivians, with a cover illustrating a dark-skinned man with a missing tooth (through Photoshop) to increase the ideological content of the note or in 2010 when the newspaper La Nación denounced an invasion of Bolivians, Peruvians and Paraguayans in Argentina, which unleashed a wave of xenophobic and racist comments from readers.
=== Undigested food remnants === Sometimes undigested food may make an appearance in feces. Common undigested foods found in human feces are seeds, nuts, and corn, mainly because of their high fiber content. Beets may turn feces different hues of red. Artificial food coloring in some processed foods, such as highly colorful packaged breakfast cereals, can cause an unusual coloring of feces if eaten in sufficient quantities. Undigested objects such as seeds can pass through the human digestive system, and later germinate. One result of this is tomato plants growing where treated sewage sludge has been used as fertilizer.
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.
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.