Everything below concerns reference standard. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2025-09-05. Where a claim depends on a specific study, the study is described rather than over-claimed.
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.
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.
The mechanism of action involves binding to REV-ERB receptors and recruiting corepressor complexes, which represses target gene transcription. This contrasts with many nuclear receptor agonists that activate transcription. Downstream effects may include changes in autophagy, mitochondrial biogenesis, and lipid handling, but the precise pathways remain an active area of study. Whether these molecular events translate into meaningful physiological effects in humans is unresolved. Most evidence comes from cultured cells and rodent models rather than human participants.
SR9009 is a synthetic small molecule developed as an agonist of the nuclear receptors REV-ERBα (NR1D1) and REV-ERBβ (NR1D2). These receptors help regulate circadian rhythms and metabolic gene expression. In cell and animal studies, SR9009 alters transcription of genes involved in lipid metabolism, inflammation, and mitochondrial function. It is not an approved medicine, and its pharmacological profile in humans remains largely uncharacterized. The compound is frequently discussed in the context of circadian biology and metabolic research rather than clinical use.
| 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 |
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.
Analytical identification of SR9009 typically relies on liquid chromatography coupled with tandem mass spectrometry. In biological samples, researchers first separate the compound from matrix components using protein precipitation, liquid-liquid extraction, or solid-phase extraction. High-performance liquid chromatography with ultraviolet detection and nuclear magnetic resonance spectroscopy can support structural confirmation of reference materials. Because SR9009 is a small, relatively lipophilic molecule, reverse-phase columns and acidic mobile phases are common. Laboratories often include isotope-labeled internal standards to improve quantification and to correct for ion suppression.
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.
When signs of tolerance to midazolam occur during intensive care unit sedation the addition of an opioid or propofol is recommended. Withdrawal symptoms can include irritability, abnormal reflexes, tremors, clonus, hypertonicity, delirium and seizures, nausea, vomiting, diarrhea, tachycardia, hypertension, and tachypnea.
GPS jamming of uncertain origin disrupted navigation of ships near the Strait of Hormuz. The United States Department of State designated the Muslim Brotherhood branch in Sudan as a terrorist organization. On 10 March, an IRGC commander stated that Iran was only firing missiles with payloads of 1,000 kg or more. AFP reported that Iran's attacks were the "most intense and heaviest" since the start of the war. This showed a shift in tactics from saturating air defenses to high-impact penetration strikes. American general Dan Caine acknowledged that Iran was fighting back, but not harder than the US expected. Following the Syrian president's support for the disarmament of Hezbollah and a campaign of mobilization by the Syrian army on the Lebanese border, shells from Lebanon landed in Serghaya, 20 km (12 mi) from Damascus where the Syrian Armed Forces forces presided. Israel issued an urgent evacuation notice to southern suburbs of Beirut. Defense analyst AJ Jaff reported that Iran's ballistic missile launch rate fell 92% from day one of the war (480 to 40) and the drone launch rate fell 92% (720 to 60). On 11 March 14 US bombers were deployed to RAF Fairford in the UK, where bombs were being prepared for loading. This followed US war secretary Hegseth's statement that it was the "most intense day of strikes inside Iran". Israel reportedly struck the Parchin military complex. A branch of Bank Sepah in Tehran was hit by a strike, prompting the IRGC to warn that they could retaliate by striking US or Israeli banks in the region.
FK Ibar Leposavić FK Kopaonik Lešak FK Moša Banje FK Rudar Kosovska Mitrovica FK Zvečan FK Radnik Prilužje (until 2013) FK Sočanica (until 2014) There are two other clubs from North Kosovo, which compete in different leagues:
== Prognosis == The prognosis for any individual with PFBC is variable and hard to predict. There is no reliable correlation between age, extent of calcium deposits in the brain, and neurological deficit. Since the appearance of calcification is age-dependent, a CT scan could be negative in a gene carrier who is younger than the age of 55. Progressive neurological deterioration generally results in disability and death.
Cochran (born 1929), American chemist, known for pioneering studies on the nature of free radicals Ernst Cohen (1869–1944 Auschwitz), Dutch chemist known for work on the allotropy of metals) Mildred Cohn (1913–2009), American chemist, a pioneer in the applying nuclear magnetic resonance to enzyme reactions, particularly reactions of adenosine triphosphate David Collison (PhD 1980), British chemist known for development of electron paramagnetic resonance spectroscopy Vicki Colvin (born 1965), American chemist known for work on the synthesis and characterization of nanomaterials James Bryant Conant (1893–1978), American organic chemist who explored the complex relationship between chemical equilibrium and the reaction rate of chemical processes, Priestley Medal 1944 Elias James Corey (born 1928), American organic chemist, winner of the 1990 Nobel Prize in Chemistry for developing the theory and methodology of organic synthesis, specifically retrosynthetic analysis Robert Corey (1897–1971), American biochemist known for co-discovery of the α-helix and the β-sheet Carl Ferdinand Cori (1896–1984), Czech biochemist, Nobel Prize in physiology or medicine 1947 for discovering how glycogen is broken down and resynthesized Gerty Cori (1896–1957), American biochemist, Nobel Prize in physiology or medicine 1947 for discovering how glycogen is broken down and resynthesized John Cornforth (1917–2013), Australian-British chemist, 1975 Nobel Prize in Chemistry for work on the stereochemistry of enzyme-catalysed reactions Athel Cornish-Bowden (born 1943).
Sources: en.wikipedia.org
Visceral fat or abdominal fat (also known as organ fat or intra-abdominal fat) is located inside the abdominal cavity, packed between the organs (stomach, liver, intestines, kidneys, etc.). Visceral fat is different from subcutaneous fat underneath the skin, and intramuscular fat interspersed in skeletal muscles. Fat in the lower body, as in thighs and buttocks, is subcutaneous and is not consistently spaced tissue, whereas fat in the abdomen is mostly visceral and semi-fluid. Visceral fat is composed of several adipose depots, including mesenteric, epididymal white adipose tissue (EWAT), and perirenal depots. Visceral fat is often expressed in terms of its area in cm2 (VFA, visceral fat area). An excess of visceral fat is known as abdominal obesity, or "belly fat", in which the abdomen protrudes excessively. New developments such as the Body Volume Index (BVI) are specifically designed to measure abdominal volume and abdominal fat. Excess visceral fat is also linked to type 2 diabetes, insulin resistance, inflammatory diseases, and other obesity-related diseases. Likewise, the accumulation of neck fat (or cervical adipose tissue) has been shown to be associated with mortality. Several studies have suggested that visceral fat can be predicted from simple anthropometric measures, and predicts mortality more accurately than body mass index or waist circumference. Men are more likely to have fat stored in the abdomen due to sex hormone differences. Estrogen (female sex hormone) causes fat to be stored in the buttocks, thighs, and hips in women.
=== Behavior === Behavioral patterns associated with BPD frequently involve impulsive actions, which may manifest as substance use disorders, binge eating, unprotected sexual encounters, and self-injury, among other self-harming practices. These behaviors are a response to the intense emotional distress experienced by individuals with BPD, serving as an immediate but temporary alleviation of their emotional pain. However, such actions typically result in feelings of shame and guilt, contributing to a recurrent cycle. This cycle typically begins with emotional discomfort, followed by impulsive behavior aimed at mitigating this discomfort, only to lead to shame and guilt, which in turn exacerbates the emotional pain. This escalation of emotional pain then intensifies the compulsion towards impulsive behavior as a form of relief, creating a vicious cycle. Over time, these impulsive responses can become an automatic mechanism for coping with emotional pain. Interventions such as dialectical behavior therapy (DBT) and schema therapy aim to disrupt this cycle by improving emotional regulation, distress tolerance, and adaptive coping strategies.
Whites owned most of the best farmland, and had far superior education, wages and homes, but the schooling, healthcare, infrastructure and salaries available to black Rhodesians were nevertheless very good by African standards. In the wider Imperial context, Southern Rhodesia occupied a category unto itself because of the "special quasi-independent status" it held. The Dominions Office, formed in 1925 to handle British relations with the dominions of Australia, Canada, New Zealand, Newfoundland, South Africa and the Irish Free State (the Statute of Westminster 1931 delineated the rights of the dominions more clearly in that year), also dealt with Southern Rhodesia, and Imperial Conferences included the Southern Rhodesian Prime Minister alongside those of the dominions from 1932. This unique arrangement continued following the advent of Commonwealth Prime Ministers' Conferences in 1944. Southern Rhodesians of all races fought for Britain in the Second World War, and the colonial government gradually received more autonomy regarding external affairs. During the immediate post-war years, Southern Rhodesian politicians generally thought that they were as good as independent as they were, and that full autonomy in the form of dominionship would make little difference to them. Post-war immigration to Southern Rhodesia, mainly from Britain, Ireland and South Africa, caused the white community to swell from 68,954 in 1941 to 221,504 in 1961. The black population grew from 1,400,000 to 3,550,000 over the same period.
Brown fat in humans in the scientific and popular literature refers to two cell populations defined by both anatomical location and cellular morphology. Both share the presence of small lipid droplets and numerous iron-rich mitochondria, giving the brown appearance.
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 that acts as an agonist at REV-ERBα and REV-ERBβ. It is used mainly as a research chemical to study circadian and metabolic pathways. It is not approved for human therapeutic use.