This is a working overview of reference standard, written for readers who want more than a one-paragraph summary but less than a textbook.
Reviewed 2025-09-24. Anything still debated is marked as such rather than presented as settled.
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.
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, also called NR1D1 and NR1D2. These receptors help regulate circadian rhythms and metabolic gene programs. The compound was developed for laboratory research, not as an approved therapeutic. Its identity is distinct from steroid hormones and selective androgen receptor modulators. Scientific interest centers on how REV-ERB activation changes gene expression in cells and animal models.
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.
| Property | Value | Notes |
|---|---|---|
| Appearance | Off-white to pale yellow solid | Visual description varies with purity and source |
| Solubility | Soluble in DMSO and ethanol; poorly soluble in water | Organic stock solutions are common in research |
| Typical storage | -20 °C, desiccated, protected from light | Avoid repeated freeze-thaw cycles |
| Typical analytical method | LC-MS or HPLC-UV | Reference standards are needed for quantification |
| Molar mass | Approximately 437.9 g/mol | Calculated from the reported free-base formula |
Regulatory agencies have not approved SR9009 for human therapeutic use. It is typically sold as a research chemical with labels stating that it is not for human consumption. The World Anti-Doping Agency prohibits the substance in sport, generally under the category of non-approved substances. Customs and national laws may restrict importation, sale, or possession. Product quality and legal status can vary by country and vendor, and therapeutic claims are not permitted in regulated advertising because the compound lacks approval.
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.
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 and metabolic gene expression. In laboratory experiments, SR9009 binds these receptors and alters transcription of genes involved in lipid handling, glucose metabolism, and mitochondrial function. It is not a naturally occurring compound and has no approved therapeutic use. Research interest stems from its ability to modify energy metabolism in cells and animal models.
In rodent studies, SR9009 has been reported to increase mitochondrial content in skeletal muscle and improve exercise endurance under some conditions. These findings led to popular descriptions such as an exercise mimetic, although that term oversimplifies the biology. Effects vary by dose, timing, tissue, and model. The compound's influence on circadian pathways means that time of administration can matter in experiments. Whether similar metabolic changes occur in humans remains largely unexplored in controlled published trials.
In the 1918 general election, Lloyd George, hailed as "the Man Who Won the War", led his coalition into a khaki election. Lloyd George and the Conservative leader Bonar Law wrote a joint letter of support to candidates to indicate they were considered the official Coalition candidates—this "coupon", as it became known, was issued against many sitting Liberal MPs, often to devastating effect, though not against Asquith himself. The coalition won a massive victory: Labour increased their position slightly, but the Asquithian Liberals were decimated. Those remaining Liberal MPs who were opposed to the Coalition Government went into opposition under the parliamentary leadership of Sir Donald MacLean who also became Leader of the Opposition. Asquith, who had appointed MacLean, remained as overall Leader of the Liberal Party even though he lost his seat in 1918. Asquith returned to Parliament in 1920 and resumed leadership. Between 1919 and 1923, the anti-Lloyd George Liberals were called Asquithian Liberals, Wee Free Liberals or Independent Liberals. Lloyd George was increasingly under the influence of the rejuvenated Conservative party who numerically dominated the coalition. In 1922, the Conservative backbenchers rebelled against the continuation of the coalition, citing, in particular, Lloyd George's plan for war with Turkey in the Chanak Crisis, and his corrupt sale of honours. He resigned as prime minister and was succeeded by Bonar Law.
==== Safety audits ==== Safety audits were done every year in the US and European UCC plants, but only every two years in other parts of the world. Before a "Business Confidential" safety audit by UCC in May 1982, the senior officials of the corporation were well aware of "a total of 61 hazards, 30 of them major and 11 minor in the dangerous phosgene/methyl isocyanate units" in Bhopal. In the 1982 audit, it was indicated that worker performance was below standards. Ten major concerns were listed. UCIL prepared an action plan, but UCC never sent a follow-up team to Bhopal. Many of the items in the 1982 report were temporarily fixed, but by 1984, conditions had again deteriorated. In September 1984, an internal UCC report on the West Virginia plant in the United States revealed a number of defects and malfunctions. It warned that "a runaway reaction could occur in the MIC unit storage tanks, and that the planned response would not be timely or effective enough to prevent catastrophic failure of the tanks". This report was never forwarded to the Bhopal plant, although the main design was the same.
The large range and marked variability between individuals is due to variation in factors including product matrix, ignition temperature, and inhalational dynamics (e.g., number, duration, and intervals of inhalations, breath hold time, depth and volume of inhalations, size of inhaled particles, deposition site in the lungs). THC is detectable within seconds with inhalation and peak levels of THC occur after 3 to 10 minutes. Smoking or inhaling THC results in greater blood levels of THC and its metabolites and a much faster onset of action than oral administration of THC. Inhalation of THC bypasses the first-pass metabolism that occurs with oral administration. The bioavailability of THC with inhalation is increased in heavy users. Transdermal administration of THC is limited by its extreme water insolubility. Efficient skin transport can only be obtained with permeation enhancement. Transdermal administration of THC, as with inhalation, avoids the first-pass metabolism that occurs with oral administration.
While there are substantial differences between microbial and mammalian technologies (the volume / value relationships are $10/kg and 100 tonnes for microbial and $1,000,000/kg and 10 kilograms for mammalian technology; the cycle times are 2–4 and 10–20 days, respectively), they are even more pronounced between mammalian and synthetic chemical technology (see Table 1).
=== No development reported === Bupropion (amfebutamone; Wellbutrin) – norepinephrine–dopamine reuptake inhibitor and nicotinic acetylcholine receptor negative allosteric modulator [35] Elcubragistat (ABX-1431; Lu-AG06466) – monoacylglycerol lipase (MAGL) inhibitor [36] EX-597 (KDS-4103; ORG-231295; URB-597) – fatty acid amide hydrolase (FAAH) inhibitor [37] IMM-201 (DAR-901; SRL-172; heat-killed Mycobacterium vaccae strain NCTC-11659) – immunomodulator, immunostimulant, and vaccine [38] Ketamine sublingual (SLS-003; Wafermine) – NMDA receptor antagonist and dissociative hallucinogen [39] Lanicemine (ARL-15896; ARR-15896; BHV-5500; FPL-15896) – NMDA receptor antagonist [40] Research programme: allosteric modulators - Addex Therapeutics – various actions [41] Research programme: cannabis extract therapeutics - Cannabis Science [42] Research programme: cannabinoid-based therapeutics - Axim Biotechnologies (Cannabidiol/Gabapentin; Cannbleph™) [43] Research programme: CNS disorders therapeutics - Sage Therapeutics (SAGE 105; SGE-202; SGE-301; SGE-516) – GABAA receptor modulators and NMDA receptor modulators [44] Research programme: psychedelic and empathogenic compounds subcutaneous - Bexson Biomedical – undefined mechanisms of action Research programme: serotonin 2A receptor agonists - Bright Minds Biosciences Research programme: tryptamine based therapeutics - PsyBio Therapeutics – serotonin 5-HT2A receptor agonists Topiramate (Epitomax; KW-6485; KW-6485P; MCN 4853; RWJ 17021; Topamax; Topimax; Topina) – various actions [45]
Sources: en.wikipedia.org
When injected secretly, it does not have any effect, whereas standard pain drugs have an effect, even if they are administered without the subject's awareness. The supposed mechanism is an enhancement of the neural pathways of expectation as a result of dopamine and endogenous opioids being suddenly released throughout numerous structures of the brain and spinal cord. The ventral tegmental area is the structure believed to mediate proglumide's analgesic and euphoric effects, however dozens of areas with a wide range of physical and psychological functions are implicated in the mediation of the placebo effect (this accounts for proglumide's ability to produce physically measurable effects on vital signs such as heart rate, blood pressure, respiration rate, and tidal volume which cannot be accounted for by its clinically insignificant δ-opioid affinity.
The unlikely geminal diol species CH3C(OH)+2 is stable in these environments. For aqueous solutions the pH scale is the most convenient acidity function. Other acidity functions have been proposed for non-aqueous media, the most notable being the Hammett acidity function, H0, for superacid media and its modified version H− for superbasic media. In aprotic solvents, oligomers, such as the well-known acetic acid dimer, may be formed by hydrogen bonding. An acid may also form hydrogen bonds to its conjugate base. This process, known as homoconjugation, has the effect of enhancing the acidity of acids, lowering their effective pKa values, by stabilizing the conjugate base. Homoconjugation enhances the proton-donating power of toluenesulfonic acid in acetonitrile solution by a factor of nearly 800. In aqueous solutions, homoconjugation does not occur, because water forms stronger hydrogen bonds to the conjugate base than does the acid.
They become more frequent with advancing gestational age and are therefore commonly encountered in mature term placentas. Their presence alone is physiological; only a diffuse or excessive increase relative to gestational age may indicate abnormal villous maturation or maternal vascular malperfusion.
Hypervalency is almost unknown in the 2p elements for the same reason, because the high electronegativity makes it difficult for a small nitrogen atom to be a central atom in an electron-rich three-center four-electron bond since it would tend to attract the electrons strongly to itself. Thus, despite nitrogen's position at the head of group 15 in the periodic table, its chemistry shows huge differences from that of its heavier congeners phosphorus, arsenic, antimony, and bismuth. Nitrogen may be usefully compared to its horizontal neighbours' carbon and oxygen as well as its vertical neighbours in the pnictogen column, phosphorus, arsenic, antimony, and bismuth. Although each period 2 element from lithium to oxygen shows some similarities to the period 3 element in the next group (from magnesium to chlorine; these are known as diagonal relationships), their degree drops off abruptly past the boron–silicon pair. The similarities of nitrogen to sulfur are mostly limited to sulfur nitride ring compounds when both elements are the only ones present. Nitrogen does not share the proclivity of carbon for catenation. Like carbon, nitrogen tends to form ionic or metallic compounds with metals. Nitrogen forms an extensive series of nitrides with carbon, including those with chain-, graphitic-, and fullerenic-like structures. It resembles oxygen with its high electronegativity and concomitant capability for hydrogen bonding and the ability to form coordination complexes by donating its lone pairs of electrons.
Sources: en.wikipedia.org
Fluid mechanics is the branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them. Originally applied to water (hydromechanics), it found applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical, and biomedical engineering, as well as geophysics, oceanography, meteorology, astrophysics, and biology. It can be divided into fluid statics, the study of various fluids at rest; and fluid dynamics, the study of the effect of forces on fluid motion. It is a branch of continuum mechanics, a subject which models matter without using the information that it is made out of atoms; that is, it models matter from a macroscopic viewpoint rather than from microscopic. Fluid mechanics, especially fluid dynamics, is an active field of research, typically mathematically complex. Many problems are partly or wholly unsolved and are best addressed by numerical methods, typically using computers. A modern discipline, called computational fluid dynamics (CFD), is devoted to this approach. Particle image velocimetry, an experimental method for visualizing and analyzing fluid flow, also takes advantage of the highly visual nature of fluid flow.
Essendon was fined $2 million, an Australian sporting record fine against a club. Essendon was ruled ineligible to compete in the 2013 AFL finals series, and would be relegated to finish ninth; (the club was on track to qualify for the finals in seventh place). Essendon was prohibited from exercising draft picks in two drafts: in 2013, its first and second-round draft picks were prohibited, and in 2014, it was prohibited from exercising the first and second-round draft picks it would have received based on its finishing position, but was granted the last draft pick in the first round. Senior coach James Hird was suspended from involvement in any football club for twelve months, effective 25 August 2013. Football operations manager Danny Corcoran was suspended from involvement in any football club for four months, with a further two-month suspended sentence, effective 1 October 2013. A fine of $30,000 was imposed on assistant coach Mark Thompson. Thompson personally paid $5,000 of the fine, with Essendon covering the balance. As part of the agreement, Hird dropped legal action that he had raised against the charges in the Supreme Court. Despite the connections between Essendon's AFL and VFL teams, the VFL team was still permitted to play in the VFL finals series. Club doctor Bruce Reid was also charged and issued a suspension. He announced he would contest the charges in the Supreme Court of Victoria, and on 18 September 2013, the AFL dropped the charges.
The visionary Swiss painter Peter Birkhäuser was treated by a student of Jung, Marie-Louise von Franz, and corresponded with Jung about the translation of dream symbolism into works of art. American abstract expressionist Jackson Pollock underwent Jungian psychotherapy in 1939 with Joseph Henderson. Henderson engaged Pollock through his art, having him make drawings, which led to the appearance of many Jungian concepts in his paintings. Contrary to some sources, Jung did not visit Liverpool but recorded a dream in which he did, and of which he wrote, "Liverpool is the pool of life, it makes to live." A plaster statue of Jung was erected in Mathew Street in 1987 that was vandalised and replaced by a more durable version in 1993.
Sources: en.wikipedia.org
It is usually detected by LC-MS or HPLC-UV against a reference standard. In biological matrices, metabolite targeting can improve detection. No universal immunoassay is widely available.
The compound is generally handled as light-sensitive and stored cold and dry. Stability in solution depends on solvent, concentration, and storage time. Specific degradation rates are not fully standardized.
Limited water solubility affects formulation for cell and animal studies. Organic co-solvents are often used to dissolve it. Precipitation can confound assay results if not controlled.
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.