A practical reference on REV-ERB agonist: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
Reviewed 2026-06-28. Anything still debated is marked as such rather than presented as settled.
Storage conditions for research-grade SR9009 generally involve a freezer at approximately minus twenty degrees Celsius, sometimes lower for long-term preservation. Containers should remain tightly closed and protected from light. Desiccants may be used to limit moisture uptake. Solutions are often stored in aliquots to avoid repeated warming and cooling. Stability data for the compound under various conditions are limited, so laboratories typically follow supplier recommendations and verify performance through periodic analytical checks rather than assuming indefinite stability.
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.
For long-term storage, SR9009 is typically kept as a solid at low temperature, protected from moisture and light. Desiccated conditions limit hydrolysis, while opaque containers reduce photochemical breakdown. Solutions are less stable than solids and are often stored frozen in aliquots to avoid repeated freeze-thaw cycles. Stability data are not standardized across all suppliers, so users should rely on certificate-of-analysis information when available. Degradation may appear as color change, precipitate, or decreased chromatographic purity.
Laboratory identification of SR9009 typically relies on chromatographic separation coupled to mass spectrometry, often with ultraviolet detection as a secondary check. Nuclear magnetic resonance spectroscopy can confirm molecular structure when a reference standard is available. Because many suppliers sell the compound as a research chemical, independent identity testing is important for experimental reproducibility. A single retention time is not sufficient proof of identity, especially when related compounds may be present. Purity assessments usually report a percentage based on area normalization.
SR9009 is generally described as poorly soluble in water and more soluble in organic solvents such as dimethyl sulfoxide and ethanol. Stock solutions are commonly prepared in an organic solvent before dilution into an aqueous buffer or vehicle. Precipitation can occur if the organic fraction is reduced too quickly or if the final concentration exceeds the compound's solubility limit. Sonication or gentle warming may aid dissolution in some protocols, but excessive heat can promote degradation. Container material and pH can also influence observed solubility.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white powder | Typical for research-grade material |
| Solubility | Soluble in DMSO and ethanol; low aqueous solubility | Organic stock solutions are common |
| Typical storage temperature | -20 °C or lower | Protect from light and moisture |
| Common analytical method | LC-MS/MS | Used for detection and confirmation |
| Common synonyms | SR9009; Stenabolic | Stenabolic is an informal name |
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.
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.
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.
== Precautions == Sulfuryl chloride is toxic, corrosive, and acts as a lachrymator. It releases hydrogen chloride upon contact with water, as well as donor solvents such as dimethyl sulfoxide and dimethylformamide.
The combination of these two steps, both of which are catalyzed by aminoacyl tRNA synthetase, produces a charged tRNA that is ready to add amino acids to the growing polypeptide chain. In addition to binding an amino acid, tRNA has a three nucleotide unit called an anticodon that base pairs with specific nucleotide triplets on the mRNA called codons; codons encode a specific amino acid. This interaction is possible thanks to the ribosome, which serves as the site for protein synthesis. The ribosome possesses three tRNA binding sites: the aminoacyl site (A site), the peptidyl site (P site), and the exit site (E site). There are numerous codons within an mRNA transcript, and it is very common for an amino acid to be specified by more than one codon; this phenomenon is called degeneracy. In all, there are 64 codons, 61 of each code for one of the 20 amino acids, while the remaining codons specify chain termination.
Shrubs are generally ericaceous, and include the evergreen mountain laurel (Kalmia latifolia), various species of blueberries (Vaccinium spp.), black huckleberry (Gaylussacia baccata), a number of deciduous rhododendrons (azaleas), and smaller heaths such as teaberry (Gaultheria procumbens) and trailing arbutus (Epigaea repens ). The evergreen great rhododendron (Rhododendron maximum) is characteristic of moist stream valleys. These occurrences are in line with the prevailing acidic character of most oak forest soils. In contrast, the much rarer chinquapin oak (Quercus muehlenbergii) demands alkaline soils and generally grows where limestone rock is near the surface. Hence no ericaceous shrubs are associated with it. The Appalachian flora also include a diverse assemblage of bryophytes (mosses and liverworts), as well as fungi. Some species are rare and/or endemic. As with vascular plants, these tend to be closely related to the character of the soils and the thermal environment in which they are found. Eastern deciduous forests are subject to a number of serious insect and disease outbreaks. Among the most conspicuous is that of the introduced spongy moth (Lymantria dispar), which infests primarily oaks, causing severe defoliation and tree mortality. But it also has the benefit of eliminating weak individuals, and thus improving the genetic stock, as well as creating rich habitat of a type through accumulation of dead wood. Because hardwoods sprout so readily, this moth is not as harmful as the hemlock woolly adelgid.
== Peace == The Global Peace Index 2018, published by the Institute for Economics and Peace ranked Thailand 113 of 163 nations for overall level of peacefulness (1=most peaceful; 163=least peaceful). Other ASEAN nations ranked were: Singapore, 8; Malaysia, 25; Laos, 46; Indonesia, 55; Vietnam, 60; Cambodia, 96; Myanmar, 122; and Philippines, 137.
Iodine will kill all principal pathogens and, given enough time, even spores, which are considered to be the most difficult form of microorganisms to be inactivated by disinfectants and antiseptics. Octenidine dihydrochloride, currently increasingly used in continental Europe, often as a chlorhexidine substitute. Peroxides, such as hydrogen peroxide and benzoyl peroxide. Commonly, 3% solutions of hydrogen peroxide have been used in household first aid for scrapes, etc. However, the strong oxidization causes scar formation and increases healing time during fetal development. Phenols such as phenol itself (as introduced by Lister) and triclosan, hexachlorophene, chlorocresol, and chloroxylenol. The fact that the more substituted and more lipophylic phenols are less toxic, less irritant and more powerful was gradually discovered in late 19th century. Nowadays comparatively more water-soluble phenols such as chlorocresol are commonly used as preservatives in personal care products while less soluble such as chloroxylenol – as topical antiseptics. Both can be encountered in household disinfectants. Quat salts such as benzalkonium chloride/lidocaine (trade name Bactine among others), cetylpyridinium chloride, or cetrimide. These surfactants disrupt cell walls. Quinolines such as hydroxyquinolone, dequalium chloride, or chlorquinaldol. 4-Hexylresorcinol, or S.T.37
Sources: en.wikipedia.org
=== OpenTag === DASH7 Mode 2 developers benefit from the open-source firmware library called OpenTag, which provides developers with a "C"-based environment in which to develop DASH7 applications quickly. So in addition to DASH7 (ISO 18000-7) being an open source, ISO standard, OpenTag is an open-source stack that is quite unlike other wireless sensor networking (e.g. ZigBee) and active RFID (e.g. proprietary) options elsewhere in the marketplace today. Even though OpenTag is an open-source project, people may not be able to use it free of charge. As of August 2015, there is no evidence to suggest that OpenTag bears a royalty, although current versions of OpenTag license Archived 2013-12-31 at the Wayback Machine do include a provision permitting RAND licensing.
== F == Fire pits – indigenous peoples throughout the Americas constructed fire pits, or hearths, for cooking, warmth, light, socializing, and tool manufacturing. Archaeological evidence of fire pits in the Americas dates back over 12,000 years; a hearth discovered at the Utah Test and Training Range containing tools, a spear tip, and tobacco seeds was dated to approximately 12,300 years ago, representing some of the earliest inhabitants of the Great Basin. Indigenous Americans developed sophisticated variations of the fire pit, including earth ovens, stone-lined pits used for slow-roasting plant bulbs such as camas, sotol, and agave, which represented a major dietary innovation during the Archaic period. Fire pits were also used for thousands of years to heat-treat stones for tool manufacturing, making them stronger and less likely to fracture, and later for firing pottery. The clambake, developed by indigenous peoples of the Atlantic seaboard such as the Wampanoag, uses a type of earth oven built on a beach with heated rocks, seaweed, and shellfish; early European settlers adopted and elaborated this practice from coastal indigenous peoples. In the Andes, the huatia earth oven, used to roast freshly harvested potatoes and other tubers over hot stones buried under earth, is a pre-Inca tradition that continues to be practiced as a communal celebration after the potato harvest.
=== Other explanations === In the UK, psychiatrist Kingsley Jones sees the support of the Board of Control as important in persuading psychiatrists to use insulin coma therapy. The treatment then acquired the privileged status of a standard procedure, protected by professional organizational interests. He also notes that it has been suggested that the Mental Treatment Act 1930 encouraged psychiatrists to experiment with physical treatments. British lawyer Phil Fennell notes that patients "must have been terrified" by the insulin coma therapy procedures and the effects of the massive overdoses of insulin, and were often rendered more compliant and easier to manage after a course. Leonard Roy Frank, an American activist from the psychiatric survivors movement who underwent 50 forced insulin coma treatments combined with ECT, described the treatment as "the most devastating, painful and humiliating experience of my life", a "flat-out atrocity" glossed over by psychiatric euphemism, and a violation of basic human rights. In 2013, French physician-and-novelist Laurent Seksik wrote a historical novel about the tragic life of Eduard Einstein: Le cas Eduard Einstein. He related the encounter between Dr Sakel and Mileva Maric, Albert Einstein's first wife (and Eduard's mother), and the way Sakel's therapy had been given to Eduard, who had schizophrenia.
(WINNER) The contestant won the whole competition. (WIN) The contestant won "The Killer" (Main Heat challenge). (HIGH) The contestant had one of the best dishes for that week. (IN) The contestant performed well enough to move on to the next week. (LOW) The contestant had one of the bottom dishes for that week, but was not eliminated. (OUT) The contestant was eliminated for worst dish. ‡The contestant won "The Thriller" (Preheat challenge)
==== Ghana ==== In 2018, Zipline signed a contract with the government of Ghana to make up to 600 deliveries a day for four years at the cost of about $12.5 million. In April 2019, Ghana's president Nana Akufo-Addo announced the opening of the first distribution center in Ghana. Vice President Mahamudu Bawumia launched the first Zipline drone to Tafo Hospital on April 24, 2019. This first delivery contained a resupply shipment of yellow fever vaccines to prevent stock-out. In 2021, the government of Ghana expanded its contract with Zipline to add four additional distribution centers, bringing the total number of contracted distribution centers in the country to eight. Zipline presently operates six distribution centers in Ghana, serving over 2,300 health facilities. When the network is complete, Zipline will be able to serve about 85 percent of the population directly and the remainder indirectly, reaching over 3,200 health facilities in every region of the country. In March 2022, Zipline announced that the company had delivered over one million doses of the COVID-19 vaccine by drone in Ghana over the prior year. An independent study of Zipline's impact on the health system in Ghana found that Zipline's drone delivery service shortened vaccine stock-outs by 60 percent, decreased inventory-driven missed vaccination opportunities by 42 percent, decreased days facilities were without critical medical supplies by 21 percent, and increased the types of medicines and supplies stocked at health facilities by 10 percent.
Sources: en.wikipedia.org
Research-grade SR9009 is typically stored frozen at about minus twenty degrees Celsius, protected from light and moisture. Stock solutions are often kept in aliquots to avoid repeated freeze-thaw cycles. Specific storage conditions should follow the supplier's documentation.
Liquid chromatography with tandem mass spectrometry is widely used to detect and confirm SR9009 in laboratory samples. The technique offers high sensitivity and can distinguish the target compound from related substances. Nuclear magnetic resonance and ultraviolet detection may support identity and purity checks.
Online products labeled as SR9009 may vary in identity, purity, and actual content. Independent testing helps confirm that a sample matches its label and does not contain unexpected contaminants. This is important for reproducible research and for interpreting experimental results.
Liquid chromatography with mass spectrometry is a common approach. Ultraviolet detection and nuclear magnetic resonance can support identification when suitable standards are available.