If you have been reading about Stenabolic 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 2026-08-01. Numbers and descriptions here follow the published literature rather than marketing material.
SR9009 is a synthetic small molecule studied as an agonist of REV-ERB nuclear receptors. REV-ERB alpha and REV-ERB beta help regulate circadian rhythms and metabolic gene expression. In laboratory research, SR9009 has been used to probe how these receptors affect skeletal muscle, liver, and adipose tissue. The compound was identified in academic drug-discovery work and is often described in scientific literature by its chemical name and research code. It is not an approved medicine, and human clinical data remain limited or absent.
SR9009 binds REV-ERB receptors and alters their repressive activity on target genes. This action can change transcription of genes involved in lipid handling, glucose metabolism, and mitochondrial function. In rodent studies, treated animals have shown changes in muscle oxidative capacity and exercise performance, though effects vary by dose, duration, and model. The precise molecular steps connecting receptor binding to whole-body outcomes are still an active area of investigation. Findings in animals do not automatically translate to humans.
Because REV-ERB receptors are core clock components, SR9009 has been examined for effects on daily rhythms as well as metabolism. Research has explored whether the compound can shift or reinforce circadian gene expression in tissues such as liver and muscle. Some studies report improved metabolic markers in obese or diabetic mice, while others show context-dependent responses. Questions remain about which effects are direct, which are secondary to timing, and how they might differ across species.
Stability depends on physical form, temperature, light exposure, and solvent. Solid SR9009 is generally stored cold and dry, with protection from light to limit degradation. Dimethyl sulfoxide stocks are common for laboratory work, but repeated freeze-thaw cycles can reduce compound integrity. Aqueous solutions may be less stable than organic stocks, and the ethyl ester in the structure can be susceptible to hydrolysis under certain conditions. Researchers typically validate storage conditions and recheck purity before quantitative experiments, especially when using archived material.
Regulatory treatment of SR9009 varies by country and region. It is not approved as a pharmaceutical, and several jurisdictions restrict its sale for human consumption. Some authorities classify it as a research chemical, a prescription-only substance, or a prohibited performance-enhancing agent in sport. Purchasers may encounter certificates of analysis, but these documents do not guarantee identity, purity, or legality. In research settings, institutional safety reviews and controlled procurement help ensure that materials are handled under appropriate oversight. The absence of harmonized rules means that legal status can change and requires verification.
| Property | Value | Notes |
|---|---|---|
| Chemical class | Synthetic REV-ERB agonist | Small-molecule nuclear receptor ligand |
| Appearance | Off-white to pale yellow solid | Typical for research-grade powder |
| Solubility class | Soluble in DMSO; low water solubility | Common stock solutions use organic solvent |
| Typical stock solvent | Dimethyl sulfoxide | Used for laboratory assays |
| Common analytical method | HPLC with UV or mass detection | Used for identity and purity checks |
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.
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 agencies have not approved SR9009 for human therapeutic use. It is typically sold as a research chemical with labels stating that it is not for human consumption. The World Anti-Doping Agency prohibits the substance in sport, generally under the category of non-approved substances. Customs and national laws may restrict importation, sale, or possession. Product quality and legal status can vary by country and vendor, and therapeutic claims are not permitted in regulated advertising because the compound lacks approval.
Several misconceptions surround SR9009. It is often described as a SARM, a steroid, or an exercise pill, but its known target is the REV-ERB receptor family. Rodent studies have examined exercise capacity and metabolic markers, yet human outcomes remain unproven. Oral bioavailability appears low in animals, and human pharmacokinetics are not well characterized. Online products may contain impurities or different compounds, so identity and purity testing are important for research use.
SR9009 is frequently discussed in fitness and research-chemical contexts, yet it has no approved medical indication. Regulatory agencies have not authorized it for human use, and it is not a standard prescription drug. Some sports organizations list it as a prohibited substance because of its potential performance-enhancing properties. Published human data are sparse, so claims about its effects in people often rely on animal models or anecdotal reports. Quality and identity of online materials can vary widely.
SR9009 is a synthetic small molecule studied as a REV-ERB agonist. REV-ERBα and REV-ERBβ are nuclear receptors that help regulate circadian rhythms and metabolic gene expression. The compound was identified in academic screening efforts to find synthetic ligands for these receptors. In cell and animal studies, SR9009 alters transcription of genes involved in lipid and glucose metabolism, and it can shift circadian behavior. It is not an approved therapeutic agent.
=== Emerging or aspirational technologies === Fruit juices contain compounds that can be undesirable to consumers. Apple juices can be cloudy, and grapefruit juices can be bitter. Enzymatic technologies, involving respectively pectinases and naringinase, address these problems.
The leveraged buyout of Electronic Arts is completed, with a consortium led by Saudi Arabia's Public Investment Fund and including Silver Lake and Affinity Partners acquiring the American video game publisher for US$55 billion and taking it private. The transaction is the largest leveraged buyout in history. The Senate confirms Dr. Erica Schwartz as the director of the Centers for Disease Control and Prevention to succeed acting director Dr. Jay Bhattacharya. August 6 A Republican-led US Senate committee votes to hold former Chief Medical Advisor to the President Anthony Fauci in contempt of Congress, escalating efforts to blame him for potential COVID-19 pandemic mistakes. United States Senator Mitch McConnell is discharged from a rehabilitation center after more than seven weeks of recovery following a June hospitalization. He will continue recovering at home while remaining away from the Senate. A judge in New Mexico orders Meta Platforms to pay an additional $567 million in penalties over five years for liability in knowingly harming children's mental health. August 7 A sweeping Russia sanctions bill negotiated by the late Senator Lindsey Graham is passed by the Senate to force Russian President Vladimir Putin to end the Russo-Ukrainian war. US opens test ranges for small companies to receive munitions faster. Former U.S. president Joe Biden's son Hunter says in a BBC interview that Biden's prostate cancer has metastasized into his bones and further. August 8 The Senate confirms Todd Blanche as the United States attorney general to succeed Pam Bondi.
1H (atomic mass 1.007825031898(14) Da) is the most common hydrogen isotope, with an abundance of > 99.98%. Its nucleus consists of only a single proton, so it has the formal name protium. The proton has never been observed to decay, so 1H is considered stable. It is the only stable nuclide with no neutrons. Some Grand Unified Theories proposed in the 1970s predict that proton decay can occur with a half-life between 1028 and 1036 years. If so, then 1H (and all nuclei now believed to be stable) are only observationally stable. As of 2018, experiments have shown that the mean lifetime of the proton is > 3.6×1029 years.
== Principle == Cholecystokinin (CKK) is a peptide hormone secreted by I-cells in the intestinal mucosa. It stimulates the secretion of pancreatic fluid into the duodenum through the sphincter of oddi. This fluid is rich in pancreatic enzymes amylase, trypsin, and lipase. It also promotes contraction and relaxation of the gallbladder. Secretin is a peptide hormone that stimulates the secretion of both pancreatic fluid and bicarbonate. The Secretin-cholecystokinin test is considered the gold standard test of pancreatic exocrine function. It is now rarely used in adults in favour of non-invasive tests, though it is still used in some cases in infants with pancreatic insufficiency to distinguish between cystic fibrosis and Schwachman-Diamond syndrome.
Sources: en.wikipedia.org
== Science == Colorants function through selective electromagnetic absorbance in the visible spectrum. A given pigment or dye molecule absorbs different wavelengths of electromagnetic radiation according to its atomic structure and local chemical environment. The quantum behavior of a chemical typically results in distinct resonant frequencies of chemical bonds, which can be excited best by discrete wavelengths—meaning broad spectrum radiation has its spectra changed via absorption upon interaction. The physical shape, size, organization, and concentration of dyes and pigments can also drastically affect observed color. Pigments are particularly susceptible to altered appearances based on physical properties. Most modern synthetic dye molecules contain two components. The first part is an aromatic benzene ring or system of benzene rings, often substituted. The second is a chromophore, a conjugated double bond system with unsaturated groups. When exposed to visible light, this part absorbs or reflects color. Other components of colorant molecules can tune intensity, color, solubility and substrate affinity. Dyes and pigments can be categorized according to their synthetic or chemical properties. British chemist Edward Chambers Nicholson showed that pure aniline produced no dye. Hofmann showed that toluidine must be present to make these dyes. Aniline dyes, including mauve, are prepared from aniline-containing amounts of toluidine. One can also classify dyes based on chemical formulas, azo-dyes from coupling, or diazonation—reactions with a characteristic azo group.
Several months after qualifying as a lecturer in philosophy, Adorno delivered an inaugural lecture at the Institute for Social Research, an independent organization that had recently appointed Horkheimer as its director and, with the arrival of the literary scholar Leo Löwenthal, social psychologist Erich Fromm, and philosopher Herbert Marcuse, sought to exploit recent theoretical and methodological advances in the social sciences. His lecture "The Actuality of Philosophy" created a scandal.
A mushroom develops from a nodule, or pinhead, less than two millimeters in diameter, called a primordium, which is typically found on or near the surface of the substrate. It is formed within the mycelium, the mass of threadlike hyphae that make up the fungus. The primordium enlarges into a roundish structure of interwoven hyphae roughly resembling an egg, called a "button". The button has a cottony roll of mycelium, the universal veil, that surrounds the developing fruit body. As the egg expands, the universal veil ruptures and may remain as a cup, or volva, at the base of the stalk, or as warts or volval patches on the cap. Many mushrooms lack a universal veil; therefore, they do not have either a volva or volval patches. Often, a second layer of tissue, the partial veil, covers the blade-like gills that bear spores. As the cap expands the veil breaks, and remnants of the partial veil may remain as a ring, or annulus, around the middle of the stalk or as fragments hanging from the margin of the cap. The ring may be skirt-like as in some species of Amanita, collar-like as in many species of Lepiota, or merely the faint remnants of a cortina (a partial veil composed of filaments resembling a spiderweb), which is typical of the genus Cortinarius. Mushrooms lacking partial veils do not form an annulus. The stalk (also called the stipe, or stem) may be central and support the cap in the middle, or it may be off-center or lateral, as in species of Pleurotus and Panus. In other mushrooms, a stalk may be absent, as in the polypores that form shelf-like brackets.
=== Miscellaneous === Urine drug screen — screen for usage of recreational drugs Urine cytology — cytopathological examination of cells in the urine, used to screen for cancer Urine protein electrophoresis — classification and measurement of different proteins in the urine; used to help diagnose monoclonal gammopathies Urine organic acids, urine amino acids — used to test for some inborn errors of metabolism
Brewers in Bavaria had for centuries been selecting cold-fermenting yeasts by storing ("lagern") their beers in cold alpine caves. The process of natural selection meant that the wild yeasts that were most cold tolerant would be the ones that would remain actively fermenting in the beer that was stored in the caves. A sample of these Bavarian yeasts was sent from the Spaten brewery in Munich to the Carlsberg brewery in Copenhagen in 1845 who began brewing with it. In 1883 Emile Hansen completed a study on pure yeast culture isolation and the pure strain obtained from Spaten went into industrial production in 1884 as Carlsberg yeast No 1. Another specialised pure yeast production plant was installed at the Heineken Brewery in Rotterdam the following year and together they began the supply of pure cultured yeast to brewers across Europe. This yeast strain was originally classified as Saccharomyces carlsbergensis, a now defunct species name which has been superseded by the currently accepted taxonomic classification Saccharomyces pastorianus.
Sources: en.wikipedia.org
=== Binding of Xa inhibitors to factor Xa === The Xa inhibitors all bind in a so-called L-shape fashion within the active site of factor Xa. The key constituents of the factor Xa are the S1 and S4 binding sites. It was first noted that the natural compounds, antistasin and TAP, which possess highly polar and therefore charged components bind to the target with some specificity. That's why newer drugs were designed with positively charged groups but those resulted in poor bioavailability. Nowadays marketed Xa inhibitors, therefore contain an aromatic ring with various moieties attached for different interactions with the S1 and S4 binding sites. This also ensures good bioavailability as well as maintaining firm binding strength. The Xa inhibitors currently on market today, therefore rely on hydrophobic and hydrogen bonding instead of highly polar interactions.
The Klang War (1867–1874) began as a dispute between Raja Abdullah and Raja Mahadi over the Klang chieftaincy, with Mahadi rejecting Abdullah's appointment by Sultan Abdul Samad of Selangor. The conflict drew in rival Chinese secret societies—the Ghee Hin Kongsi largely backing Mahadi and the Hai San Secret Society supporting Abdullah—as well as Bugis-descended and Malay chiefs who viewed Mahadi as more legitimate. Fighting spread after Mahadi captured the Klang Fort and Abdullah fled to Malacca, disrupting tin production, trade routes, and British commercial interests in the Klang Valley. At the same time, the neighbouring Larut Wars (1861–1874) between the Hai San and Ghee Hin in Perak similarly destabilised tin-rich districts and alarmed British merchants. Appeals from Malay chiefs for mediation combined with British concerns over regional disorder paved the way for formal intervention, culminating in the Pangkor Treaty of 1874 which established a system of British residents in the Malay states. As Frank Swettenham later wrote, "It is that though the circumstances demanded intervention, we came into the Malay States at the invitation of the Malay Rulers, to teach them a better form of administration." In the Second World War, the Japanese Army invaded and occupied Malaya, North Borneo, Sarawak, and Singapore for over three years. During this time, ethnic tensions were raised and nationalism grew. Popular support for independence increased after Malaya was reconquered by Allied forces.
ISBN 978-0-87220-923-7. Powell, Anton (1990). Euripides, Women and Sexuality. Routledge Press. ISBN 0-415-01025-X. Pucci, Pietro. "Survival in the Holy Garden." The Violence of Pity In Euripides’ “Medea,” vol. 41, Cornell University Press, 1980, pp. 91–130. JSTOR, http://www.jstor.org/stable/10.7591/j.cttq44w0.6. Accessed 27 Mar. 2023. Rabinowitz, Nancy S. (1993). Anxiety Veiled: Euripides and the Traffic in Women. Cornell University Press. ISBN 0-8014-8091-4. Saïd, Suzanne (2002). "Greeks and Barbarians in Euripides' Tragedies: The End of Differences?". In Harrison, Thomas (ed.). Greeks and Barbarians. Translated by Antonia Nevill. Taylor & Francis. ISBN 0-415-93959-3. Sommerstein, Alan (2002). Greek Drama and Dramatists. Routledge Press. ISBN 0-203-42498-0. ISBN 978-0-203-42498-8 Tessitore, Aristide. "Euripides’ ‘Medea’ and the Problem of Spiritedness." The Review of Politics, vol. 53, no. 4, 1991, pp. 587–601. JSTOR, JSTOR 1407307. Accessed 27 Apr. 2023. Tigani, Francesco (2010), Rappresentare Medea. Dal mito al nichilismo, Aracne. ISBN 978-88-548-3256-5 Mossman, Judith (2011). Medea: Introduction, Translation and Commentary. Warminster: Aris & Phillips. ISBN 978-0-856-68788-4.
Forty-six Israeli civilians, 28 soldiers and one security officer were killed in Hezbollah's attacks on Israel. An additional three soldiers were killed in non-combat incidents; one by malfunctioning ammunition and the other two in a tank accident. Forty-seven soldiers, including a civilian researcher posthumously recognized as a soldier, were killed during combat in southern Lebanon. Hezbollah's attacks resulted in the evacuation of over 90,000 people—60,000 forced and 30,000 voluntary—from northern Israel. As of July 2024, the Israeli government issued orders for the evacuation of 43 settlements located within 3 miles (4.8 km) of the border with Lebanon. At least eight Israeli UAVs were shot down over Lebanon: four Hermes 450 and four Hermes 900 models. According to the Israeli Army Radio, 2,874 buildings have been reported damaged by Hezbollah, including 841 in need of rebuilding. Property damage was estimated to be around ₪1 billion (US$273 million). As of November 2024, over 60% of the buildings in Metula were destroyed by Hezbollah attacks since the start of the conflict. Three-fourths of the buildings in Manara, 382 buildings in Kiryat Shmona, and 55,000 acres of nature in northern Israel and the Golan Heights have been damaged or destroyed by Hezbollah's attacks, while major damage also took place in Nahariya and Shlomi.
Sources: en.wikipedia.org
SR9009 is a synthetic research compound that acts on REV-ERB nuclear receptors. It is not approved for human use and is sold only as a research chemical. Its effects have been studied mainly in cells and rodents.
It binds REV-ERB alpha and REV-ERB beta and changes the expression of genes tied to metabolism and circadian rhythm. These changes can affect mitochondria and energy use in animal models. The exact chain from receptor binding to physiological outcome is still being mapped.
No reliable human trials show that SR9009 improves athletic performance. Some rodent studies report endurance changes, but these results are not proof of human benefit. Its use in sport is prohibited, and quality and safety data are lacking.
The most common approach is liquid chromatography-tandem mass spectrometry, often after extraction from blood, urine, or tissue. Ultraviolet detection and nuclear magnetic resonance spectroscopy are used mainly for reference material characterization. Isotope-labeled internal standards improve accuracy.