Everything below concerns LC-MS/MS. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-05-28. Where a claim depends on a specific study, the study is described rather than over-claimed.
In laboratory settings, SR9009 is commonly identified by its molecular structure and its interaction with REV-ERB receptors. Vendors may list it under synonyms such as Stenabolic or REV-ERB agonist, but those names do not define purity or identity. Analytical confirmation typically uses high-performance liquid chromatography with ultraviolet detection or liquid chromatography–mass spectrometry. A reference standard is needed to compare retention time and mass spectrum, because the compound can be confused with related research chemicals.
Handling practices for SR9009 focus on minimizing degradation and contamination. The solid is generally stored desiccated at or below -20 °C, protected from light and moisture. Stock solutions are often prepared in dimethyl sulfoxide or ethanol, then aliquoted to avoid repeated freeze–thaw cycles. Aqueous solubility is low, so formulations for animal studies may require cosolvents or suspending agents. Personnel should follow institutional chemical safety procedures, because toxicological data for humans are incomplete.
Regulatory status varies by country and intended use. Major drug agencies have not granted marketing authorization for SR9009 as a medicine, and it is not listed as a controlled substance in many jurisdictions. It is often sold as a research chemical, a category that may fall outside pharmaceutical manufacturing rules. Buyers should verify local laws and supplier documentation, including certificates of analysis. The lack of standardized quality controls raises concerns about identity, purity, and actual content in products marketed online.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white solid | Visual inspection is not sufficient for identity. |
| Solubility | Soluble in DMSO and ethanol | Low solubility in water. |
| Typical storage | -20 °C, desiccated, dark | Protect from repeated temperature changes. |
| Common analytical method | LC-MS or HPLC-UV | Reference standard required for comparison. |
| Common synonyms | SR9009; Stenabolic; REV-ERB agonist | Vendor naming may vary. |
Preclinical reports describe effects on exercise endurance, mitochondrial content, and lipid profiles in rodents, but these findings come from specific experimental conditions. Many studies use high doses or delivery methods that may not translate directly to human use. SR9009 has been reported to have low oral bioavailability and a short half-life, which complicates interpretation of oral dosing studies. It is not established as safe or effective for any indication. Literature discussions often separate its pharmacological mechanism from unverified claims made in fitness and supplement markets.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is not an approved medicine and has no established human therapeutic use. The compound appears in scientific literature as a tool for probing circadian and metabolic regulation. Online sellers often label it as a research chemical, sometimes using the nickname Stenabolic. Its chemical identity is distinct from selective androgen receptor modulators, stimulants, and peroxisome proliferator-activated receptor delta agonists. Researchers use it mainly in cell and animal experiments.
At the molecular level, SR9009 binds REV-ERBα and REV-ERBβ and alters their repressive activity on target genes. These nuclear receptors help regulate the circadian clock, lipid synthesis, glucose metabolism, and inflammatory pathways. By changing transcription, the compound can shift the timing or magnitude of downstream metabolic processes in model systems. It does not act through androgen receptors or adenosine receptors, which distinguishes it from several substances sold for athletic performance. Whether the same transcriptional changes occur in humans at tolerable exposures remains an open question because controlled human studies are lacking.
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.
Analytical chemists detect SR9009 with liquid chromatography-tandem mass spectrometry, commonly abbreviated LC-MS/MS. Sample preparation may involve protein precipitation, liquid-liquid extraction, or solid-phase extraction before analysis. Laboratories can target the parent compound or its metabolites, depending on the matrix and the purpose of testing. Anti-doping methods require sensitive and specific assays because concentrations in biological samples can be low. Reference standards and validated methods are essential for reliable identification and quantification.
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.
Research interest in SR9009 grew from studies showing improved running endurance in mice after short treatment periods. Those experiments linked the compound to increased mitochondrial content and fatty acid oxidation in muscle, but the findings come from animal models and specific dosing schedules. Independent replication has been limited, and the pathways connecting REV-ERB activation to exercise performance are still being mapped. Whether similar responses occur in humans is an open question.
Sulfur forms several polyatomic molecules. The best-known allotrope is octasulfur, cyclo-S8. The point group of cyclo-S8 is D4d and its dipole moment is 0 D. Octasulfur is a soft, bright-yellow solid that is odorless. It melts at 115.21 °C (239.38 °F), and boils at 444.6 °C (832.3 °F). At 95.2 °C (203.4 °F), below its melting temperature, cyclo-octasulfur begins slowly changing from α-octasulfur to the β-polymorph. The structure of the S8 ring is virtually unchanged by this phase transition, which affects the intermolecular interactions. Cooling molten sulfur freezes at 119.6 °C (247.3 °F), as it predominantly consists of the β-S8 molecules. Between its melting and boiling temperatures, octasulfur changes its allotrope again, turning from β-octasulfur to γ-sulfur, again accompanied by a lower density but increased viscosity due to the formation of polymers. At higher temperatures, the viscosity decreases as depolymerization occurs. Molten sulfur assumes a dark red color above 200 °C (392 °F). The density of sulfur is about 2 g/cm3, depending on the allotrope; all of the stable allotropes are excellent electrical insulators. The sublimation of sulfur becomes noticeable more or less between 20 °C (68 °F) and 50 °C (122 °F), and occurs readily in boiling water at 100 °C (212 °F). Sulfur is insoluble in water but soluble in carbon disulfide and, to a lesser extent, in other nonpolar organic solvents, such as benzene and toluene. Sulfur is also soluble in supercritical carbon dioxide.
{\displaystyle {\begin{aligned}\cos \varphi &={\frac {(\mathbf {u} _{1}\times \mathbf {u} _{2})\cdot (\mathbf {u} _{2}\times \mathbf {u} _{3})}{|\mathbf {u} _{1}\times \mathbf {u} _{2}|\,|\mathbf {u} _{2}\times \mathbf {u} _{3}|}}\\\sin \varphi &={\frac {\mathbf {u} _{2}\cdot ((\mathbf {u} _{1}\times \mathbf {u} _{2})\times (\mathbf {u} _{2}\times \mathbf {u} _{3}))}{|\mathbf {u} _{2}|\,|\mathbf {u} _{1}\times \mathbf {u} _{2}|\,|\mathbf {u} _{2}\times \mathbf {u} _{3}|}},\end{aligned}}}
== List of women chemists == The following list is split into the centuries when the majority of the scientist's work was performed. The scientist's listed may be born and perform work outside of the century they are listed under.
== Fruits and vegetables == Various leafy greens are grown in Uganda. These may be boiled in the stews, or served as side dishes in fancier homes. Amaranth (dodo), nakati, and borr are examples of regional greens. Fruits such as mangoes, bananas and pineapples are plentiful and commonly consumed, whether cooked in foods or eaten alone as snacks or as a dessert.
Sources: en.wikipedia.org
An increased intake of trans fatty acids may raise the risk of breast cancer by 75%, suggest the results from the French part of the European Prospective Investigation into Cancer and Nutrition. Diabetes: There is a growing concern that the risk of type 2 diabetes increases with trans fat consumption. However, consensus has not been reached. For example, one study found that risk is higher for those in the highest quartile of trans fat consumption. Another study has found no diabetes risk once other factors such as total fat intake and BMI were accounted for. Obesity: Research indicates that trans fat may increase weight gain and abdominal fat, despite a similar caloric intake. A 6-year experiment revealed that monkeys fed a trans fat diet gained 7.2% of their body weight, as compared to 1.8% for monkeys on a mono-unsaturated fat diet. Although obesity is frequently linked to trans fat in the popular media, this is generally in the context of eating too many calories; there is not a strong scientific consensus connecting trans fat and obesity, although the 6-year experiment did find such a link, concluding that "under controlled feeding conditions, long-term TFA consumption was an independent factor in weight gain. TFAs enhanced intra-abdominal deposition of fat, even in the absence of caloric excess, and were associated with insulin resistance, with evidence that there is impaired post-insulin receptor binding signal transduction." Liver dysfunction: Trans fats are metabolized differently by the liver than other fats and interfere with delta 6 desaturase.
=== 17 October === The SAF and the RSF traded blame for a drone attack on a community meeting in Al-Mazroub, North Kordofan that killed 17 people, including Nazir Suleiman Jaber Juma’a Sahl, the leader of the Majaneen tribe. The JDF claimed to have retaken Abu Gamra. The SAF and allied forces claimed to have repelled an RSF attack on El Fasher, destroying 10 RSF vehicles and capturing two others.
== History == In 1889, German physiologist Max Verworn applied a low-level direct current to a mixture of bacterial species and observed that some moved toward the anode and others moved to the cathode. Two years later, in 1891, Belgian microscopist E. Dineur made the first known report of vertebrate cells migrating directionally in a direct current, a phenomenon which he coined galvanotaxis. Dineur used a zinc–copper cell to apply a constant current to the abdominal cavity of a frog via a pair of platinum electrodes. He found that inflammatory leukocytes aggregated at the negative electrode. Since these pioneering studies, a variety of different cell types and organisms have been shown to respond to electric fields.
=== The Pint Group === Edmonton hospitality group that owns 7 restaurant brands in Western Canada, Toronto, and Halifax. Banners include The Pint (5 locations), Beercade, Smoke BBQ + BAR, Employees Only, Hey Bud, Crash Hotel, and Arena Liquor store.
Belize is an original member (1995) of the World Trade Organization (WTO), and participates actively in its work. The pact involves the Caribbean Forum (CARIFORUM) subgroup of the Group of African, Caribbean, and Pacific states (ACP). CARIFORUM is presently the only part of the wider ACP-bloc that has concluded the full regional trade-pact with the European Union. The British Army Garrison in Belize is used primarily for jungle warfare training, with access to more than 13,000 square kilometres (5,000 sq mi) of jungle terrain. Belize is a party to the Rome Statute of the International Criminal Court. The United States (US) is a major diplomatic partner to Belize and has been since 1981, following their Independence. Over the past few decades, relations between the two states have consistently grown through mutual cooperation, forming a strong, long-lasting partnership. In Belize, areas such as the economy, international/national security, and education have greatly improved with the support of the US. The US frequently offers Belize financial support. In 2024, Belize and the US foreign assistance agency, Millennium Challenge Corporation (MCC), signed a $125 million compact to support Belize's education and energy sectors. The MCC is a US government-funded foreign assistance agency that focuses on reducing poverty through economic growth. It provides grants as opposed to loans, ensuring the program is not profit-driven. In Belize, this has translated into a system that modernizes educational opportunities and enhances the energy sector.
Sources: en.wikipedia.org
== Main constituents == Sandalwood oil contains more than 90% sesquiterpenic alcohols of which 50–60% is the tricyclic α-santalol. β-Santalol comprises 20–25%. The composition of the oil will depend on the species, region grown, age of tree, and possibly the season of harvest and details of the extraction process used. Current International Organization for Standardization (ISO) standards for S. album oil are 41–55% α-santalol and 16–24% β–santalol (ISO 3518: 2002E).
Because water-soluble B vitamins are eliminated in the urine, taking large doses of most B vitamins usually only produces transient side effects (with the only exception being pyridoxine). General side effects may include restlessness, nausea, and insomnia. These side effects are almost always caused by dietary supplements and not food.
The reign of the young Władysław III (1434–44), who succeeded his father Władysław II Jagiełło and ruled as king of Poland and Hungary, was cut short by his death at the Battle of Varna, during a crusade against the Ottoman Empire. This disaster led to an interregnum of three years that ended with the accession of Władysław's brother Casimir IV Jagiellon in 1447. Critical developments of the Jagiellonian period were concentrated during Casimir IV's long reign, which lasted until 1492. In 1454, Royal Prussia was incorporated by Poland and the Thirteen Years' War of 1454–66 with the Teutonic state ensued. In 1466, the milestone Peace of Thorn was concluded. This treaty divided Prussia to create East Prussia, the future Duchy of Prussia, a separate entity that functioned as a fief of Poland under the administration of the Teutonic Knights. Poland also confronted the Ottoman Empire and the Crimean Tatars in the south, and in the east helped Lithuania fight the Grand Duchy of Moscow. The country was developing as a feudal state, with a predominantly agricultural economy and an increasingly dominant landed nobility. Kraków, the royal capital, was turning into a major academic and cultural center, and in 1473 the first printing press began operating there. With the growing importance of szlachta (middle and lower nobility), the king's council evolved to become by 1493 a bicameral General Sejm (parliament) that no longer represented exclusively top dignitaries of the realm.
=== 1990–1997: Hardee's === In 1990, Marriott sold the chain for $365 million to Imasco, the parent company of Hardee's, a Midwestern and Southern chain seeking further expansion into the Mid-Atlantic market. The remaining non-franchised Roy Rogers locations were converted into Hardee's restaurants, although many of the converted Hardee's continued to offer Roy Rogers' fried chicken. This conversion caused a customer revolt and the units returned to the Roy Rogers' brand. The restaurants promoted new flame-broiled hamburgers, but they were not the same as the original Roy Rogers products and later failed. Hardee's finally sold the remaining Roy Rogers locations to McDonald's, Wendy's, and Boston Market between 1994 and 1996. This left 13 Roy Rogers franchisees, with two dozen free-standing locations, in addition to locations owned by HMSHost in travel plazas along highways in the Northeast. Prior to the Hardee's acquisition, Roy Rogers cooked its fries in a blend of beef tallow and vegetable oil. Hardee's, which had already replaced tallow with all vegetable shortening, implemented the same procedure for Roy Rogers.
The first launch of a cruise missile (SSM-N-8 Regulus) from a submarine occurred in July 1953, from the deck of USS Tunny, a World War II fleet boat modified to carry the missile with a nuclear warhead. Tunny and its sister boat, Barbero, were the United States' first nuclear deterrent patrol submarines. In the 1950s, nuclear power partially replaced diesel–electric propulsion. Equipment was also developed to extract oxygen from sea water. These two innovations gave submarines the ability to remain submerged for weeks or months. Most of the naval submarines built since that time in the US, the Soviet Union (now Russia), the UK, and France have been powered by a nuclear reactor. In 1959–1960, the first ballistic missile submarines were put into service by both the United States (George Washington class) and the Soviet Union (Golf class) as part of the Cold War nuclear deterrent strategy. During the Cold War, the US and the Soviet Union maintained large submarine fleets that engaged in cat-and-mouse games. The Soviet Union lost at least four submarines during this period: K-129 was lost in 1968 (a part of which the CIA retrieved from the ocean floor with the Howard Hughes-designed ship Glomar Explorer), K-8 in 1970, K-219 in 1986, and Komsomolets in 1989 (which held a depth record among military submarines—1,000 m (3,300 ft)). Many other Soviet subs, such as K-19 (the first Soviet nuclear submarine, and the first Soviet sub to reach the North Pole) were badly damaged by fire or radiation leaks.
Sources: en.wikipedia.org
Liquid chromatography–mass spectrometry is common for identity and purity checks. High-performance liquid chromatography with ultraviolet detection can also be used. Both methods require a suitable reference standard.
The solid is usually kept desiccated at -20 °C or lower and protected from light. Stock solutions are aliquoted to limit freeze–thaw cycles. Aqueous solutions are not generally recommended for long-term storage.
Laws differ by country and by intended use. It is not an approved medicine, and many vendors sell it as a research chemical. Purchasers are responsible for confirming local restrictions.
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.