SR9009 raises a handful of sensible questions. This page answers them in order, starting with the fundamentals and moving to applications.
Reviewed 2026-07-06. Anything still debated is marked as such rather than presented as settled.
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.
Research interest in SR9009 grew from studies of circadian biology and metabolic disease. Preclinical reports describe effects on exercise capacity, muscle metabolism, and blood lipid levels in rodents, but these findings come from controlled laboratory settings. The compound has low oral bioavailability in animals, which limits systemic exposure after swallowing. Investigators often use injected routes in experiments to achieve measurable plasma concentrations. Human clinical data are sparse, no approved therapeutic product exists, and whether animal effects translate to humans remains an open question.
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.
| Property | Value | Notes |
|---|---|---|
| Chemical class | Synthetic REV-ERB agonist | Binds REV-ERBα and REV-ERBβ in preclinical models |
| Molecular formula | C20H24ClN3O4S | Reported for the parent compound |
| CAS Registry Number | 1379686-30-2 | Common identifier in chemical databases |
| Appearance | Off-white to pale yellow solid | Typical research chemical solid |
| Solubility | Soluble in DMSO and ethanol; low in water | Class: small organic molecule |
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.
Mechanistically, SR9009 binds the ligand-binding domain of REV-ERBα/β and enhances recruitment of corepressor complexes. This represses target genes rather than activating them. Because REV-ERB proteins normally compete with ROR proteins at shared response elements, the net effect depends on tissue and timing. Researchers use SR9009 to probe how nuclear receptor signaling links the clock to metabolism, inflammation, and muscle biology. Findings are largely preclinical, and the precise contribution of each receptor subtype remains under study.
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.
==== Mechanism of action ==== One of the components in nabiximol, tetrahydrocannabinol (THC), weakly stimulates cannabinoid receptor 1(CBR1) and cannabinoid receptor 2 (CBR2) to produce analgesic effect (pain relief). Another component of nabiximol, cannabidiol (CBD), slightly inhibits the proliferation of T cells (a type of immune cells) and the activity of microglia (cells within the brain that regulate neural activity and repair).
== Uses == Sea cucumbers are found in various colours; some are black, white, or grey, and striped with the golden sea cucumber (Stichopus horrens), which is commonly used for medical purposes. Users believe that a solution of sea cucumbers can heal cuts, skin eruptions, and ulcers, and claim that it has a beneficial effect on the immune system. The Stichopus variegatus are used in the production of traditional Gamat oil, ointment, and gel in both Indonesia and Malaysia. In the Malaysia's state of Kelantan, gamat oil is traditionally used by the local Kelantanese Malays to heal childbirth wounds, particularly those after vaginal delivery. The Stichopus variegatus extract also shows to be effective in reducing the gastrointestinal worm burden on stray cats. Another species Stichopus chloronotus is used for combating various types of ringworm infections, which are formulate into cream, ointment, lotion or solution. Teripang Emas (Stichopus herrmanni), a type of Indonesian gamat (Indonesian: teripang laut) is usually the dried, powdered bodies of sea cucumbers made into a lotion or other topical salve. It is sometimes mixed into clay and applied to the face as a mask treatment, or put in tea and consumed for stomach complaints. A research by Indonesian Dental Faculty on rats found the administration of teripang emas powder can reduce the risk of oral candidiasis with 0.09mg/kgBW dose of stichopus hermanii are able to reduce the thickness of the tongue epithelium in the group exposed to smoke and induced by candida albicans.
where the carbon-12 nucleus used in the first reaction is regenerated in the last reaction. After the two positrons (emitted by beta-plus decay) annihilate with two ambient electrons producing an additional 2.04 MeV, the total energy released in one cycle is 26.73 MeV; in some texts, authors are erroneously including the positron annihilation energy in with the Q-value for beta-decay and then neglecting the equal amount of energy released by annihilation, leading to possible confusion. All values are calculated with reference to the Atomic Mass Evaluation 2003. The limiting (slowest) reaction in the CNO-I cycle is the proton capture on 147N. In 2006 it was experimentally measured down to stellar energies, revising the calculated age of globular clusters by around 1 billion years. The neutrinos emitted in beta decay will have a spectrum of energy ranges, because although momentum is conserved, the momentum can be shared in any way between the positron and neutrino, with either emitted at rest and the other taking away the full energy, or anything in between, so long as all the energy from the Q-value is used. The total momentum received by the positron and the neutrino is not great enough to cause a significant recoil of the much heavier daughter nucleus and hence, its contribution to kinetic energy of the products, for the precision of values given here, can be neglected. Thus the neutrino emitted during the decay of nitrogen-13 can have an energy from zero up to 1.20 MeV, and the neutrino emitted during the decay of oxygen-15 can have an energy from zero up to 1.73 MeV.
"What we know about the US-Israeli attack on Iran and Tehran's retaliation". CNN. 28 February 2026. Retrieved 28 February 2026. U.S. and Israeli Strikes on Iran, C-SPAN Tracking of traffic in the Strait of Hormuz
Sources: en.wikipedia.org
=== Fabrication of pure biomass based membrane === A biomass-based membrane is a membrane made from organic materials such as plant fibers. These membranes are often used in water filtration and wastewater treatment applications. The fabrication of a pure biomass-based membrane is a complex process that involves a number of steps. The first step is to create a slurry of the organic materials. This slurry is then cast onto a substrate, such as a glass or metal plate. The cast is then dried, and the resulting membrane is then subjected to a number of treatments, such as chemical or heat treatments, to improve its properties. One of the challenges in the fabrication of biomass-based membranes is to create a membrane with the desired properties.
=== Log odds ratio === It gives the ratio of the occurrence each amino acid combination in the observed data to the expected value of occurrence of the pair. It is rounded off and used in the substitution matrix.
is the liquid-air surface tension (force/unit length), θ is the contact angle, ρ is the density of liquid (mass/volume), g is the local acceleration due to gravity (length/square of time), and r is the radius of tube. As r is in the denominator, the thinner the space in which the liquid can travel, the further up it goes. Likewise, lighter liquid and lower gravity increase the height of the column. For a water-filled glass tube in air at standard laboratory conditions, γ = 0.0728 N/m at 20 °C, ρ = 1000 kg/m3, and g = 9.81 m/s2. Because water spreads on clean glass, the effective equilibrium contact angle is approximately zero. For these values, the height of the water column is
Worldwide, more than one billion people – infants, children, adults and elderly – can be considered vitamin D deficient, with reported percentages dependent on what measurement is used to define "deficient". A 2023 systematic review in The Lancet Regional Health estimated that ~15% of the global population is vitamin D deficient when defined as serum 25(OH)D <30 nmol/L, with higher prevalence in regions with limited sunlight exposure. Deficiency is common in the Middle-East, Asia, Africa and South America, but also exists in North America and Europe. Dark-skinned populations in North America, Europe and Australia have a higher percentage of deficiency compared to light-skinned populations that had their origins in Europe. Serum 25(OH)D concentration is used as a biomarker for vitamin D deficiency. Units of measurement are either ng/mL or nmol/L, with one ng/mL equal to 2.5 nmol/L. There is no consensus on defining vitamin D deficiency, insufficiency, sufficiency, or optimal for all aspects of health. According to the US Institute of Medicine Dietary Reference Intake Committee, below 30 nmol/L significantly increases the risk of vitamin D deficiency caused rickets in infants and young children and reduces absorption of dietary calcium from the normal range of 60–80% to as low as 15%, whereas above 40 nmol/L is needed to prevent osteomalacia bone loss in the elderly, and above 50 nmol/L to be sufficient for all health needs.
=== Stage IV: Scarring === The acute phase is over, but the patient's life is still at risk, and treatment is recommended. This stage lasts one to two weeks. The patient may experience trismus (difficulty moving/opening the jaw), scars will form, and any exposed teeth will set in place.
Sources: en.wikipedia.org
SR9009 is a synthetic small molecule studied as an agonist of the REV-ERB nuclear receptors. It is not an approved medicine, and its effects in humans are not well characterized.
No. It is a synthetic ligand that binds nuclear receptors, not a steroid or peptide hormone. Its activity depends on receptor binding rather than endocrine secretion.
Clinical evidence is limited. Most published data come from cell and animal experiments. Human safety and efficacy remain uncertain.
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.