research chemical is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Last reviewed on 2026-01-12. Where a claim depends on a specific study, the study is described rather than over-claimed.
At the molecular level, SR9009 binds the ligand-binding domain of REV-ERB and strengthens recruitment of corepressor proteins such as NCoR and HDAC3. This increases repression of target genes, including Bmal1 and other clock-controlled and metabolic genes. In rodent studies, such changes have been linked to altered lipid handling, glucose metabolism, and energy expenditure. The precise chain of events between receptor binding and whole-body effects remains an active area of research. Findings in animals do not automatically translate to humans.
Laboratory studies often administer SR9009 by injection because oral absorption appears poor in rodents. Reported pharmacokinetic properties include rapid metabolism and low systemic exposure after oral dosing. Human pharmacokinetic data are sparse, so absorption, distribution, metabolism, and excretion in people are not well defined. Some research explores related REV-ERB compounds with improved drug-like properties. Regulatory approval for any REV-ERB agonist as a human medicine has not been granted to date.
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.
| Property | Value | Notes |
|---|---|---|
| Chemical class | Synthetic small molecule | Studied as a REV-ERB agonist |
| Molecular formula | C20H24ClN3O4S | Reported for the neutral compound |
| Appearance | Off-white to pale yellow solid | Typical research-grade material |
| Solubility | Sparingly soluble in water | Soluble in solvents such as DMSO |
| Common synonyms | SR9009; Stenabolic | Stenabolic is an informal alias |
Analytical identification and purity assessment often use high-performance liquid chromatography with ultraviolet detection or mass spectrometry. Liquid chromatography–tandem mass spectrometry is used to detect and quantify SR9009 in biological matrices, including urine and blood, for anti-doping or pharmacokinetic studies. Nuclear magnetic resonance spectroscopy can confirm molecular structure. Stability depends on form and storage: the solid is generally more stable than solutions, and repeated freeze–thaw cycles may degrade samples. Purity is typically reported as a percentage from a certificate of analysis.
Regulatory treatment of SR9009 varies by country and context. It is not approved as a therapeutic drug by agencies such as the United States Food and Drug Administration or the European Medicines Agency. Sports authorities list it as a prohibited substance; the World Anti-Doping Agency classifies it among hormone and metabolic modulators. Legal status for personal possession or sale differs across jurisdictions, and some countries may restrict it under analog or research chemical laws. Buyers who seek verified material often rely on independent laboratory testing because online product labels may not match contents.
Laboratory samples of SR9009 are typically handled as research chemicals rather than pharmaceuticals. Suppliers usually state that the material is for research use only and not for human or veterinary administration. Storage recommendations generally call for a freezer at approximately −20 °C, protection from light, and a desiccated environment. The solid is often described as a white to off-white powder. Solubility is commonly reported in organic solvents such as dimethyl sulfoxide and ethanol, with low solubility in water.
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.
Regulatory treatment of SR9009 reflects its investigational status. The compound has no approved human therapeutic indication, and sports authorities prohibit its use. It appears on anti-doping lists as a non-approved substance or metabolic modulator, depending on the list version. Products sold online as research chemicals are not quality-controlled medicines, so their identity and purity can differ from the label. Such products may also contain unlisted compounds, which complicates both testing and safety assessment.
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.
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.
Detection of SR9009 in biological samples usually employs liquid chromatography coupled with tandem mass spectrometry. This method can identify the parent compound and sometimes metabolites in urine or blood. Because exposure can be low and clearance may be rapid, sample timing and limits of detection matter. Laboratories validate assays for sensitivity and specificity. Results are interpreted alongside chain-of-custody and quality-control records. Urine is the common matrix for anti-doping analysis, while blood may be used in research settings.
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.
== Organization == IMA Life is one of the four main divisions of the IMA group. IMA has 4 divisions dedicated to business areas in the main packaging and processing sectors: IMA Flavour (Tea & Coffee Packaging Solutions), IMA Active Division (Solid Dose Solutions), IMA Life (Aseptic Processing & Freeze Drying Solutions) and IMA Safe (Packaging Solutions). The last three business areas also manage companies operating in their respective sectors. The parent company, IMA is a multinational Italian company based in Bologna, Italy with a consolidated turnover of 505.8 million Euros.
==== Constitutive trafficking and changes in subunit composition ==== AMPA receptors are continuously being trafficked (endocytosed, recycled, and reinserted) into and out of the plasma membrane. Recycling endosomes within the dendritic spine contain pools of AMPA receptors for such synaptic reinsertion. Two distinct pathways exist for the trafficking of AMPA receptors: a regulated pathway and a constitutive pathway. In the regulated pathway, GluA1-containing AMPA receptors are trafficked to the synapse in an activity-dependent manner, stimulated by NMDA receptor activation. Under basal conditions, the regulated pathway is essentially inactive, being transiently activated only upon the induction of long-term potentiation. This pathway is responsible for synaptic strengthening and the initial formation of new memories. In the constitutive pathway, GluA1-lacking AMPA receptors, usually GluR2-GluR3 heteromeric receptors, replace the GluA1-containing receptors in a one-for-one, activity-independent manner, preserving the total number of AMPA receptors in the synapse. This pathway is responsible for the maintenance of new memories, sustaining the transient changes resulting from the regulated pathway. Under basal conditions, this pathway is routinely active, as it is necessary also for the replacement of damaged receptors. The GluA1 and GluA4 subunits consist of a long carboxy (C)-tail, whereas the GluA2 and GluA3 subunits consist of a short carboxy-tail.
Intending to wrest back the initiative, sever UNITA's logistics lifelines to South West Africa and Zaire, and forestall any future insurgent offensives, FAPLA launched Operation Saluting October in mid-1987. The impetus for Saluting October likely originated with the Soviet military mission, which pressed the idea of a major conventional thrust to destroy UNITA's southeastern front as early as 1983. It had received a new commander that year, Lieutenant General Pyotr Gusev, former deputy commander of the Carpathian Military District. In light of the war's length, its cost, the rising death toll, and looming cuts in the Soviet military expenditure which would limit future efforts to support FAPLA's war effort, Gusev wanted a decisive multi-divisional offensive to crush UNITA once and for all. Operation Saluting October was a two-pronged offensive aimed at retaking three major settlements from UNITA, Cangamba, Cassamba, and Mavinga. The FAPLA command staff intended the attack on Cangamba and Cassamba as a feint, hoping to draw UNITA forces there and away from Mavinga. Once Mavinga was in government hands, FAPLA could expel the remaining insurgents from Moxico Province and pave the way for a final assault on Savimbi's headquarters at Jamba. Between 4 and 9 Soviet advisers were to be attached on the battalion level, albeit with strict orders not to participate in the fighting and withdraw from the front as necessary to avoid contact with UNITA. They were accompanied by a small number of Cuban advisers and East German technical personnel serving in a variety of support roles.
Sources: en.wikipedia.org
GoldSrc (pronounced "gold source", formerly the Half-Life Engine) is a proprietary game engine developed by Valve. At its core, GoldSrc is a heavily modified version of id Software's Quake engine. It made its debut in 1998 with Half-Life and powered future games developed by or with oversight from Valve, including Half-Life's expansions, Day of Defeat and games in the Counter-Strike series. GoldSrc was succeeded by the Source engine with the releases of Half-Life: Source, Half-Life 2, and Counter-Strike: Source in 2004.
=== Impact on biogeochemistry === In biogeochemistry, scientists focused mainly on deuterium as a tracer for environmental processes, especially the water cycle. American geochemist Harmon Craig, once a graduate student of Urey, discovered the relationship between rainwater's hydrogen and oxygen isotope ratios. The linear correlation between the two heavy isotopes occurs worldwide and is called the global meteoric water line. By the late 1960s, the focus of hydrogen isotopes shifted away from water and toward organic molecules. Plants use water to form biomass, but a 1967 study by Zebrowski, Ponticorvo, and Rittenberg found that the organic material in plants had less 2H than the water source. Zebrowski's research measured the deuterium concentration of fatty acids and amino acids derived from sediments in the Mohole drilling project. Further studies by Bruce Smith and Samuel Epstein in 1970 confirmed the depletion of 2H in organics compared to environmental water. Another duo in 1970, Schiegl and Vogel, analyzed the HIC as water became biomass, as biomass became coal and oil, and as oil became natural gas. In each step they found 2H further depleted. A landmark paper in 1980 by Marilyn Epstep, now M. Fogel, and Thomas Hoering titled "Biogeochemistry of the stable hydrogen isotopes" refined the links between organic materials and sources. In this early stage of hydrogen stable isotope study, most isotope compositions or fractionations were reported as bulk measurements of all organic or all inorganic matter.
In 1969, the dictator Francisco Franco designated Juan Carlos de Borbón as his successor "by title of king" with the title of Prince of Spain, by virtue of the Law of Succession to the Headship of the State of 1947. After Franco's death on November 20, 1975, the Regency Council assumed interim rule. Two days later, Juan Carlos I was proclaimed king before the Francoist Cortes. He delivered a speech in which he avoided referencing Franco's triumph in the Spanish Civil War and in which, after expressing his "respect and gratitude" to Franco, he stated that he intended to reach "an effective consensus of national concord". In this way, he made it clear that he did not support the pure "immobilist continuism" advocated by the búnker ─ which defended the perpetuation of Francoism under the monarchy established by Franco, following the model established in the Organic Law of the State of 1967─ but with a message to the Army to face the future with "serene tranquility" that hinted that the reform would be made from the regime's own institutions. The most enthusiastic round of applause from the Cortes, however, was not for the new king but for Franco's family present at the ceremony. The anti-Franco opposition received the king's speech with coldness. The ratification of Carlos Arias Navarro as President of the Government caused enormous disappointment, barely mitigated by the appointment of Torcuato Fernández Miranda, former tutor to the prince, as the new President of the Cortes and of the Council of the Realm, key institutions in the framework left by the Franco dictatorship.
In one study, disk diffusion method proved concentration-dependent antifungal activity against Trichophyton, Microsporum and Epidermophyton, three of the most common species of dermatophytes that cause superficial fungal infections of human skin. Further research is needed, however, to examine the role of sangre de grado from Croton lechleri as an effective antifungal agent in animal and human models. Antiviral activity against influenza, parainfluenza, Herpes simplex viruses I and II, and Hepatitis A and B by Croton lechleri extracts and compounds have been exhibited. The most notable compound involved in antiviral activity is SP-303, also known as crofelemer, which has been heavily studied in vitro for its antiviral activity against the aforementioned viruses, as well as thymidine kinase mutants of HSV-1 and HSV-2 and acyclovir-resistant strains. Antidiarrhoeal Activity Crofelemer, a purified proanthocyanidin oligomer extracted from the sap of Croton lechleri has been investigated for potential antidiarrhoeal activity. Various clinical studies have confirmed significant improvement in acute E. coli and V. cholera diarrhea cases from the administration of crofelemer. In the context of the principal luminal membrane determinants of intestinal fluid secretion, the mechanism of crofelemer action involves the inhibition of apical membrane cAMP-stimulated (CFTR) and calcium-stimulated (CaCC) Cl− channels by crofelemer molecules, with little effect on cation channels or cAMP/calcium signaling.
Sources: en.wikipedia.org
Atmosphere of the Sun: in detectable trace amounts Atmosphere of Mercury: 3.4%, and large amounts of water in Mercury's exosphere Atmosphere of Venus: 0.002% Earth's atmosphere: ≈0.40% over full atmosphere, typically 1–4% at surface Atmosphere of the Moon: in trace amounts Atmosphere of Mars: 0.03% Atmosphere of Ceres Atmosphere of Jupiter: 0.0004% – in ices only; and that of its moon Europa Atmosphere of Saturn – in ices only; Enceladus: 91% and Dione (subsurface ocean) Atmosphere of Uranus – in trace amounts below 50 bar Atmosphere of Neptune – found in the deeper layers Extrasolar planet atmospheres: including those of HD 189733 b and HD 209458 b, Tau Boötis b, HAT-P-11b, XO-1b, WASP-12b, WASP-17b, and WASP-19b. Stellar atmospheres: not limited to cooler stars and even detected in giant hot stars such as Betelgeuse, Mu Cephei, Antares and Arcturus. Circumstellar disks: including those of more than half of T Tauri stars such as AA Tauri as well as TW Hydrae, IRC +10216 and APM 08279+5255, VY Canis Majoris and S Persei.
=== Cancer === Meta-analyses have been performed to examine the association between NQO1 polymorphism and increased cancer risk. The results from some of these analyses have been summarized in the table below:
Hong Kong has a highly developed and sophisticated transport network. Over 90% of daily trips made by its residents are made with public transport, the highest percentage in the world. The Octopus card, a contactless smart payment card made for Hong Kong, is widely accepted on railways, trams, buses and ferries, and can also be used for payment in most retail stores. Alternative payments such as Apple Pay, AliPay, Mastercard, and Visa have also been gradually introduced as methods of payment for public transport.
Sources: en.wikipedia.org
SR9009 is a synthetic research compound that activates the REV-ERBα and REV-ERBβ nuclear receptors. It is not an approved drug and has no established human therapeutic use. Most published biological data come from cell and rodent studies.
No. SR9009 is frequently mislabeled as a SARM in online discussions, but it does not target androgen receptors. Its known mechanism involves REV-ERB nuclear receptors and circadian-metabolic gene regulation.
Human clinical data are very limited. There is no approved human use, and safety and efficacy in people are not established. Most evidence comes from preclinical models, so effects observed in animals may not apply to humans.
SR9009 is a synthetic REV-ERB agonist used in laboratory research. It is not an approved drug, and its effects in humans are not well characterized. It is often sold as a research chemical under the name Stenabolic.