Everything below concerns REV-ERB agonist. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-08-01. Numbers and descriptions here follow the published literature rather than marketing material.
Because REV-ERB receptors are core clock components, SR9009 has been examined for effects on daily rhythms as well as metabolism. Research has explored whether the compound can shift or reinforce circadian gene expression in tissues such as liver and muscle. Some studies report improved metabolic markers in obese or diabetic mice, while others show context-dependent responses. Questions remain about which effects are direct, which are secondary to timing, and how they might differ across species.
SR9009 is a synthetic small molecule studied as an agonist of REV-ERB nuclear receptors. REV-ERB alpha and REV-ERB beta help regulate circadian rhythms and metabolic gene expression. In laboratory research, SR9009 has been used to probe how these receptors affect skeletal muscle, liver, and adipose tissue. The compound was identified in academic drug-discovery work and is often described in scientific literature by its chemical name and research code. It is not an approved medicine, and human clinical data remain limited or absent.
SR9009 binds REV-ERB receptors and alters their repressive activity on target genes. This action can change transcription of genes involved in lipid handling, glucose metabolism, and mitochondrial function. In rodent studies, treated animals have shown changes in muscle oxidative capacity and exercise performance, though effects vary by dose, duration, and model. The precise molecular steps connecting receptor binding to whole-body outcomes are still an active area of investigation. Findings in animals do not automatically translate to humans.
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.
Pharmacokinetic data for SR9009 are limited in published literature. Some reports indicate low oral bioavailability and rapid clearance in animals, which complicates interpretation of exposure and effect. Researchers often use injected routes in preclinical work to achieve measurable systemic levels. Analytical studies rely on mass spectrometry to detect the parent compound and its metabolites. Questions about tissue distribution, active metabolites, and long-term consequences remain open. Species differences in metabolism can affect observed half-life and target engagement.
| Property | Value | Notes |
|---|---|---|
| Chemical class | Synthetic REV-ERB agonist | Small-molecule nuclear receptor ligand |
| Appearance | Off-white to pale yellow solid | Typical for research-grade powder |
| Solubility class | Soluble in DMSO; low water solubility | Common stock solutions use organic solvent |
| Typical stock solvent | Dimethyl sulfoxide | Used for laboratory assays |
| Common analytical method | HPLC with UV or mass detection | Used for identity and purity checks |
The mechanism of action involves binding to REV-ERB receptors and recruiting corepressor complexes, which represses target gene transcription. This contrasts with many nuclear receptor agonists that activate transcription. Downstream effects may include changes in autophagy, mitochondrial biogenesis, and lipid handling, but the precise pathways remain an active area of study. Whether these molecular events translate into meaningful physiological effects in humans is unresolved. Most evidence comes from cultured cells and rodent models rather than human participants.
SR9009 is a synthetic small molecule developed as an agonist of the nuclear receptors REV-ERBα (NR1D1) and REV-ERBβ (NR1D2). These receptors help regulate circadian rhythms and metabolic gene expression. In cell and animal studies, SR9009 alters transcription of genes involved in lipid metabolism, inflammation, and mitochondrial function. It is not an approved medicine, and its pharmacological profile in humans remains largely uncharacterized. The compound is frequently discussed in the context of circadian biology and metabolic research rather than clinical use.
Stability depends on physical form, temperature, light exposure, and solvent. Solid SR9009 is generally stored cold and dry, with protection from light to limit degradation. Dimethyl sulfoxide stocks are common for laboratory work, but repeated freeze-thaw cycles can reduce compound integrity. Aqueous solutions may be less stable than organic stocks, and the ethyl ester in the structure can be susceptible to hydrolysis under certain conditions. Researchers typically validate storage conditions and recheck purity before quantitative experiments, especially when using archived material.
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.
== Function == Neurotransmitter transport systems are responsible for the release, re-uptake and recycling of neurotransmitters at synapses. High affinity transport proteins found in the plasma membrane of presynaptic nerve terminals and glial cells are responsible for the removal, from the extracellular space, of released-transmitters, thereby terminating their actions. The majority of the transporters constitute an extensive family of homologous proteins that derive energy from the co-transport of Na+ and Cl−, in order to transport neurotransmitter molecules into the cell against their concentration gradient. Neurotransmitter sodium symporters (NSS) are targets for anti-depressants, psychostimulants and other drugs.
== Chemistry == The separation of the stereoisomers is one of the easier in organic chemistry and is described in the original patent. It involves "treatment of racemic methadone base with d-(+)-tartaric acid in an acetone/water mixture [which] precipitates almost solely the dextro-methadone levo-tartrate, and the more potent Levomethadone can easily be retrieved from the mother liquor in a high state of optical purity." There is now an asymmetric synthesis available to prepare both levomethadone (R-(−)-methadone) and dextromethadone (S-(+)-methadone).
=== Clinical significance === Interstitial deletions of chromosome 3 are rare, and only a few patients with a microdeletion of 3p21.31 have been reported to date. Characteristic clinical features found in patients with a microdeletion of 3p21.31 include developmental delay and distinctive facial features (including arched eyebrows, hypertelorism, epicanthus, and micrognathia). In the gene region, NCBI SNP identified 1,326 SNPS on the reverse minus strand of C3orf62. In the coding region, NCBI SNP identified 147 common SNPs.
As there are two carbon atoms available for substitution, β-amino acids have four sites (chirality included; as opposed to two in α-amino acids) for attaching the organic residue group. Accordingly, two main types β-amino acids exist differing by which carbon the residue is attached to: ones with the organic residue (R) next to the amine are called β3 and those with position next to the carbonyl group are called β2. A β-peptide can consist of only one kind of these amino acids (β2-peptides and β3-peptides), or have a combination of the two. Furthermore, a β-amino acid can form a ring using both of its sites and also be incorporated into a peptide. β-Amino acids have been prepared by many routes, including some based on the Arndt-Eistert synthesis.
Sources: en.wikipedia.org
Symptoms include feverishness, a general sense of malaise, and pain or swelling around the genitals or in the skin behind them. The infection progresses quickly and urgent medical attention is recommended. Empagliflozin can increase the risk of low blood sugar when it is used together with a sulfonylurea or insulin. When used by itself or in addition to metformin it does not appear to increase the risk of hypoglycemia.
In ruling on the 1986 Huanchaca case involving the slaying of a leading Bolivian scientist, his pilot, and a guide, the Third Criminal Court of Santa Cruz returned a guilty verdict in April 1988 against ten Brazilians and a Colombian, in addition to a Bolivian thought to be dead. The court, however, dismissed charges against five other Bolivian suspects, including several well-known drug traffickers. The freeing of two of the suspects by the Santa Cruz judges prompted the Supreme Court of Justice to demand the resignations of the entire Santa Cruz judiciary because of its leniency toward drug traffickers. Four Santa Cruz judges were dismissed because of irregularities in the Huanchaca case, which in early 1989 remained at an impasse, under advisement in the Supreme Court of Justice. Drug kingpin Roberto Suárez Gómez was arrested in 1988. Under the 1988 Antinarcotics Law, the Judicial Police must report antinarcotics operations to the closest Special Antinarcotics Force district within forty-eight hours. The law also called for the creation of three-judge Special NarcoticsControl Courts or tribunals (Juzgados Especiales de Narcotráfico) with broad responsibilities. In early 1989, the Supreme Court of Justice began appointing judges and lawyers to serve on the new tribunals, two of which began functioning as tribunals of first instance in narcotics-related cases, with jurisdiction for the judicial districts of La Paz, Cochabamba, Santa Cruz, and Beni.
Electrical burns or injuries are classified as high voltage (greater than or equal to 1000 volts), low voltage (less than 1000 volts), or as flash burns secondary to an electric arc. The most common causes of electrical burns in children are electrical cords (60%) followed by electrical outlets (14%). Lightning may also result in electrical burns. Risk factors for being struck include involvement in outdoor activities such as mountain climbing, golf and field sports, and working outside. Mortality from a lightning strike is about 10%. While electrical injuries primarily result in burns, they may also cause fractures or dislocations secondary to blunt force trauma or muscle contractions. In high voltage injuries, most damage may occur internally and thus the extent of the injury cannot be judged by examination of the skin alone. Contact with either low voltage or high voltage may produce cardiac arrhythmias or cardiac arrest.
18,000 hospitalizations 120 deaths (0.5 deaths per 100,000 inhabitants) 2.1 million lost days off work 1.2 million doctor consultations 300,000 prescriptions for antibiotics. Most foodborne disease outbreaks in Australia have been linked to raw or minimally cooked eggs or poultry. The Australian Food Safety Information Council estimates that one third of cases of food poisoning occur in the home.
During large-scale protests and demonstrations organized by Generation Z against government corruption in Nepal during September 2025, the flag became a key symbol. Protesters displayed the flag with slogans criticizing the luxurious lifestyles of politicians' children on social media. Posts featuring the flag went viral on Nepalese social media, and its adoption quickly spread among protesters. One Nepalese protester interviewed by The Kathmandu Post remarked that the flag's use in Indonesian protests "surely popularised its use in protests in Nepal". As the government of K. P. Sharma Oli was toppled by the protests, protesters hung the flag at the gates of the Singha Durbar palace as it burned.
Sources: en.wikipedia.org
Chitosan is produced commercially by deacetylation of chitin, which is the structural element in the exoskeleton of crustaceans (such as crabs and shrimp) and cell walls of fungi. A common method for obtaining chitosan is the deacetylation of chitin using sodium hydroxide in excess as a reagent and water as a solvent. The reaction follows first-order kinetics though it occurs in two steps; the activation energy barrier for the first stage is estimated at 48.8 kJ·mol−1 at 25–120 °C (77–248 °F) and is higher than the barrier to the second stage.
=== Elements for resilience === Resilience-building involves a mix of prevention, anticipation, and the capacity to absorb, adapt, and transform following a disruption. Policies and investments that reduce poverty, generate decent employment and expand access to education and basic services, as well as social protection programmes when needed, are essential building blocks of resilience.
While a majority of young Americans of the late 2010s held politically left-leaning views, Generation Z has been shifting towards the right since 2020. But most members of Generation Z are more interested in advancing their careers than pursuing idealistic political causes. Moreover, there is a significant sex gap, with implications for families, politics, and society at large. As voters, members Generation Z do not align themselves closely with either major political parties; their top issue is the economy. As consumers, Generation Z's actual purchases do not reflect their environmental ideals. Members of Generation Z, especially women, are also less likely to be religious than older cohorts. Although American youth culture has become highly fragmented by the start of the early twenty-first century, a product of growing individualism, nostalgia is a major feature of youth culture in the 2010s and 2020s.
=== Other external data === Analysis of clinical trial data may be carried out by laboratories, image processing specialists or other third parties. The clinical data manager liaises with such data providers and agree data formats and transfer schedules. Data may be reconciled against the CRF to ensure consistency.
Sources: en.wikipedia.org
SR9009 is a synthetic research compound that acts on REV-ERB nuclear receptors. It is not approved for human use and is sold only as a research chemical. Its effects have been studied mainly in cells and rodents.
It binds REV-ERB alpha and REV-ERB beta and changes the expression of genes tied to metabolism and circadian rhythm. These changes can affect mitochondria and energy use in animal models. The exact chain from receptor binding to physiological outcome is still being mapped.
No reliable human trials show that SR9009 improves athletic performance. Some rodent studies report endurance changes, but these results are not proof of human benefit. Its use in sport is prohibited, and quality and safety data are lacking.
It is a synthetic research compound that activates REV-ERB nuclear receptors. It is not an approved drug or dietary supplement. Most information comes from cell and animal studies.