If you have been reading about SR9009 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 2026-03-16. Numbers and descriptions here follow the published literature rather than marketing material.
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.
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.
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.
| 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 |
Handling recommendations for SR9009 in a laboratory setting include storing the solid at low temperature, protected from light and moisture. The compound is often dissolved in dimethyl sulfoxide or ethanol for experiments. Solutions should be prepared with appropriate personal protective equipment and disposed of according to local rules. Stability data for long-term storage are limited, so stock solutions are typically kept cold and used within defined periods. Records of preparation date and concentration support reproducibility.
SR9009 is not approved as a medicine by major regulatory agencies. It is commonly sold as a research chemical, a category that may fall outside customary drug approval and quality rules. In sports, the World Anti-Doping Agency lists SR9009 as a prohibited substance. Athletes who use it can face sanctions if it is detected in a sample. Legal status varies by country, and importation may be restricted. Enforcement practices differ across borders.
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.
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.
SR9009 is frequently discussed alongside other REV-ERB ligands, including synthetic agonists and natural heme-related molecules. Its selectivity for REV-ERB over related nuclear receptors has been measured in binding and reporter assays, though off-target activity at higher concentrations is possible. The compound is prohibited in sport by the World Anti-Doping Agency, and it is not approved for any medical use in major jurisdictions. Products sold online may be labeled as research chemicals, and their identity and purity are not guaranteed by regulatory review.
SR9009 is a synthetic small molecule that acts on the nuclear receptors REV-ERBα and REV-ERBβ. These receptors are part of the circadian clock machinery and normally repress transcription of certain target genes. In laboratory research, SR9009 is used as a chemical tool to study how REV-ERB activity influences metabolism, inflammation, and daily biological rhythms. The compound is not an approved medicine, and its effects in humans remain largely uncharacterized. It is often described as an investigational agent rather than a therapeutic product.
Scientific discussion of SR9009 often separates animal evidence from human anecdote. Rodent studies provide controlled data on endurance, metabolism, and gene expression, but they use specific strains, doses, and treatment durations. Human reports are mostly uncontrolled and cannot establish cause and effect. Open questions include oral bioavailability, tissue distribution, metabolic stability, and long-term effects. Review articles generally call for more rigorous pharmacokinetic and safety research before any clinical use could be considered.
Analytical methods for SR9009 typically rely on liquid chromatography coupled with tandem mass spectrometry. The technique can separate the parent compound from related substances and detect low concentrations in biological matrices. Urine and blood are common samples in anti-doping testing, while in vitro studies may use cell culture media. Rapid metabolism and low expected concentrations make method validation important for reliable identification. Exact metabolite patterns can vary by species and are not fully mapped.
Specific site targeting requires the residues to also be modified to be accessible and chemically bioorthogonal to the rest of the silk protein. Cytosine residues are commonly used for this type of conjugation through a Michael addition, but they tend to undergo exchange reactions which makes them unstable for long durations in a biological environment. These two methods are rather outdated but have been useful in validating the fact that 4RepCT can be tuned in the important areas of cellular adhesion, antimicrobial potency, and the type of molecule or drug attached to it. Later azide functional groups were conjugated to the N-terminal of a dragline silk protein using EDC/NHS coupling, yielding glycopolymer-conjugated films with enhanced cell adhesion and DNA-silk chimeras with controllable micro-architectures. Armed with this, the researchers in this study investigated the incorporation of 3 L-Aha residues into 4RepCT, yielding
As such, RNA aptamers can be made to target small peptides and proteins, as well as cell fragments, whole cells, and even specific tissues. Examples of RNA aptamer molecular targets and potential targets include vascular endothelial growth factor, osteoblasts, and C-X-C Chemokine Ligand 12 (CXCL2).
Compared to the United States, which has a greater supply of molybdenum in the soil, people living in those areas have about 16 times greater risk for esophageal squamous cell carcinoma. Molybdenum deficiency has also been reported as a consequence of non-molybdenum supplemented total parenteral nutrition (complete intravenous feeding) for long periods of time. It results in high blood levels of sulfite and urate, in much the same way as molybdenum cofactor deficiency. Since pure molybdenum deficiency from this cause occurs primarily in adults, the neurological consequences are not as marked as in cases of congenital cofactor deficiency. A congenital molybdenum cofactor deficiency disease, seen in infants, is an inability to synthesize molybdenum cofactor, the heterocyclic molecule discussed above that binds molybdenum at the active site in all known human enzymes that use molybdenum. The resulting deficiency results in high levels of sulfite and urate, and neurological damage.
Another turning point in this timeframe for Dick is the alleged burglary of his home and theft of his papers. After delivering "The Android and the Human", Dick became a participant in X-Kalay (a Canadian Synanon-type recovery program), effortlessly convincing program caseworkers that he was nursing a heroin addiction to do so. Dick's recovery program participation was portrayed in the posthumously released book The Dark Haired Girl (a collection of letters and journals from this period, most of a romantic nature). It was at X-Kalay, while doing publicity for the facility, that he devised the notion of rehab centers being used to secretly harvest drugs (thus inspiring the book's New-Path clinics). In the afterword, Dick dedicates the book to those of his friends—he includes himself—who had experienced debilitation or death as a result of their drug use. Mirroring the epilogue are the involuntary goodbyes that occur throughout the story—the constant turnover and burn-out of young people that lived with Dick during those years. In the afterword, he states that the novel is about "some people who were punished entirely too much for what they did", and that "drug misuse is not a disease, it is a decision, like the decision to move out in front of a moving car".
Ph-S-CH3 + H2O2 → Ph-S(O)-CH3 + H2O Alkaline hydrogen peroxide is used for epoxidation of electron-deficient alkenes such as acrylic acid derivatives, and for the oxidation of alkylboranes to alcohols, the second step of hydroboration-oxidation. It is also the principal reagent in the Dakin oxidation process.
Sources: en.wikipedia.org
The new constitution, proclaiming a democratic republic, direct universal suffrage, and the separation of powers, was promulgated on 4 November 1848. Under the new constitution, there was to be a single permanent Assembly of 750 members elected for a term of three years by the scrutin de liste. The Assembly would elect members of a Council of State to serve for six years. Laws would be proposed by the Council of State, to be voted on by the Assembly. The executive power was delegated to the president, who was elected for four years by direct universal suffrage, i.e. on a broader basis than that of the Assembly, and was not eligible for re-election. He was to choose his ministers, who, like him, would be responsible to the Assembly. Revision of this constitution was made practically impossible: it involved obtaining three times in succession a majority of three-quarters of the deputies in a special assembly. It was in vain that Jules Grévy—on behalf of those who perceived the obvious and inevitable risk of creating, under the name of a president, a monarch and indeed one who was more than a king at that—proposed that the head of the state should be no more than a removable president of the ministerial council. Lamartine, thinking that he was sure to be the choice of the electors under universal suffrage, won over the support of the Chamber, which did not even take the precaution of rendering ineligible the members of families which had reigned over France. It made the presidency an office dependent upon popular acclamation.
The problem, attributed to technical problems, is resolved by the following evening. 27 May – Post Office Limited issues an apology over the use of racist terms to describe postmasters wrongly investigated as part of the Horizon IT scandal. 28 May The Home Office announces it is launching an ad campaign on social media in Albania to deter migrants from coming to the UK; the campaign begins the following day. BBC News reports that Andrei Kelin, Russia's ambassador to the UK, has warned that the west's supply of weapons to Ukraine risks escalating the war to levels not seen so far. 29 May Mars bars, one of the top-selling chocolate bars in the UK, are given a new look with recyclable paper wrappers, in a bid to cut down on the growing problem of plastic waste. The Met Police's plan to stop attending emergency mental health incidents is described as "potentially alarming" by a former inspector of constabulary, with charity Mind also expressing concerns. 30 May Figures published by the British Retail Consortium show that supermarket prices rose in May, largely because of the price of coffee, chocolate and non-food goods. The UK government announces plans to close a loophole in the law that allows shopkeepers to give free vape samples to those under the age of majority. 31 May Two people die and eight others are injured during an incident at the beach in Bournemouth. ASLEF members hold their latest strike as part of an ongoing dispute over pay and conditions, causing widespread disruption to rail services.
=== Extant reptiles === The thorny devil (Moloch horridus) is similar in diet and activity patterns to the Texas horned lizard (Phrynosoma cornutum), although the two are not particularly closely related. Amphisbaenian skulls closely resemble those of caecilians and mammals. Modern crocodilians resemble prehistoric phytosaurs, champsosaurs, certain labyrinthodont amphibians, and perhaps even the early whale Ambulocetus. The resemblance between the crocodilians and phytosaurs in particular is quite striking; even to the point of having evolved the graduation between narrow- and broad-snouted forms, due to differences in diet between particular species in both groups. Death adders strongly resemble true vipers, but are elapids. Legless lizards evolved multiple times independently, including snakes, which are also legless lepidosaurs nested among legged lizards. Major examples of unrelated legless lizards include glass lizards (family Anguidae, related to legged alligator lizards) and flap-footed lizards (family Pygopodidae, related to geckos), which each may be mistaken for snakes. Large tegu lizards of South America have converged in form and ecology with monitor lizards, which are not present in the Americas. Anole lizards, with populations on isolated islands, are one of the best examples of both adaptive radiation and convergent evolution. Anoles on a given island evolve into multiple body types and ecological preferences, and the same set of body types appears in unrelated species across distant islands.
=== Portable ventilators === On 30 March 2020, Medtronic shared its portable ventilator design specifications during the outbreak of COVID-19 pandemic, in order to accelerate global ventilator production.
=== Books === Carrey, Jim (2013). How Roland Rolls. Illustrated by Rob Nason. Some Kind of Garden Media. ISBN 978-0-9893680-0-1. Carrey, Jim; Vachon, Dana (2020). Memoirs and Misinformation. Knopf. ISBN 9780525655978.
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.
SR9009 is a synthetic compound investigated as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is used in preclinical research on circadian rhythm and metabolism. It is not an approved drug.